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How to keep reciprocating pumps running properly in hot weather?

2025-07-11

Friendly reminder: In recent days, temperatures have risen sharply, and high temperatures may lead to machine overheating, lubrication failure, seal failure, and other issues. In severe cases, it may even cause power outages or machine shutdowns. To ensure the normal operation of the reciprocating pump, the following measures will be taken:

1.Enhance Heat Dissipation
- Ensure the pump is well-ventilated during operation. If the ambient temperature is high, use ventilation equipment (fan) for cooling.
- Avoid direct sunlight exposure. When using a reciprocating pump outdoors, employ a sunshade (or canopy) to prevent direct sunlight.

2.Lubrication Maintenance
- Replace high-temperature lubricating oil to prevent viscosity reduction under high temperatures.
- Increase the frequency of lubricant changes. In high-temperature climates, lubricants may degrade and oxidize. Check for impurities in the oil and observe if its color changes. Replace immediately if any changes are detected.

3.Motor Protection
- Regularly inspect the cooling system of the motor to ensure proper functioning and prevent burnout due to power failure.

4.Seal Inspection
- Seals are vulnerable components in reciprocating pumps. High temperatures can accelerate their wear and shorten their service life. Regularly inspect the seals for wear and check for any leaks. Replace them promptly if any issues are detected.

5.Operator Training
- Enhance emergency training for operators to enable them to determine whether the pump is functioning normally based on factors such as motor noise, vibration, and smoke, and to master corresponding response measures.

The measures mentioned above can effectively mitigate the impact of high temperatures on reciprocating pumps. We urge all customers to take such situations seriously and jointly prioritize on-site safety and the stable operation of equipment.Additionally, our Elephant reciprocating pumps can be optionally equipped with an intelligent unattended pump station system. This system supports unmanned operation, features temperature sensors for high-temperature early warning, enables multi-terminal remote monitoring, and ensures real-time data synchronization. Moreover, it offers remote start/stop, speed adjustment, data retrieval, automatic power-off, and alarm functions, significantly improving operational efficiency.
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Application of mold temperature controller in composite material molding process

2025-07-07

As a pioneer in the field of industrial temperature control, Hengde has always been committed to developing and providing advanced temperature control solutions. In the field of composite mold die casting, which is full of challenges and opportunities, Hengde has provided key mold temperature controller products to many companies with its outstanding technical strength and rich industry experience, helping companies improve production efficiency and product quality.

 

Oil Mold Temperature Controller

The head of a well-known aerospace parts production company that has cooperated with us for many years gave feedback: "Before using Hengde composite material compression molding temperature controller, we often had quality problems such as bubbles and uneven strength in the products during filament winding and compression molding processes due to unstable temperature control, and the scrap rate remained high. Since the introduction of Hengde temperature controller, these problems have been solved. Its temperature control accuracy is extremely high, and it can be accurately regulated according to the temperature curve we set, which greatly improves the quality stability of the product. Moreover, its efficient heating and cooling system has shortened our production cycle by nearly 30% and significantly reduced production costs. Hengde temperature controller is really a powerful assistant for us to improve production efficiency!"

 

The following are common and key application scenarios of mold temperature controllers in composite material molding processes:

1. Filament winding: In the filament winding molding process, the fiber is first fully impregnated with resin through the resin glue tank, and then wound on the continuously rotating core mold according to a carefully designed rule. After winding, the glue needs to be heated to solidify and mold. In this process, Hengde mold temperature controller can accurately control the heating temperature to ensure that the glue is uniformly cured under suitable temperature conditions, thereby improving the strength and stability of the winding products and meeting the stringent requirements of high-end fields such as aerospace for material performance.

 

2. Pultrusion: For the pultrusion process, the carbon fiber roving or its fabric is pulled by external force and goes through the steps of dipping, extrusion molding, heating and curing, and fixed-length cutting in sequence. Hengde composite material mold temperature controller plays a key role in the heating mold link. Through precise temperature control, it can significantly speed up the curing time, greatly improve production efficiency while ensuring product quality, and meet the needs of large-scale production in industries such as automobile manufacturing.

 

3. Resin transfer molding (RTM): In the resin transfer molding process, the reinforcement material is first made into a preform and placed in a closed mold, and then the resin is injected into the mold under the dual action of vacuum and pressure to cure it. Hengde mold temperature controller effectively speeds up the curing speed by accurately heating the mold, greatly improving production efficiency, and has been widely used in fields such as electronic equipment component manufacturing.

 

4. Compression molding: Compression molding is a process in which the molding material is placed in a metal mold and solidified under specific pressure and temperature conditions. In many compression molding processes, such as short fiber compression molding, felt compression molding, rag compression molding, lamination compression molding, winding compression molding, fabric compression molding, directional laying compression molding, preformed embryo compression molding, sheet molding compound compression molding (SMC compression molding), etc., Hengde mold temperature controller plays an indispensable role. It can accurately adjust the mold temperature according to different process requirements to ensure that the quality of the molded products is stable and meets high standards.

 

Mold Temperature Controller

 

Through its wide application in these key molding processes, Hengde composite compression mold temperature controller plays a vital role in aerospace, automobile, electronics and other fields with extremely high material performance requirements. It not only helps companies manufacture high-quality composite products, but also promotes the technological progress and development of the entire industry. Hengde will continue to uphold the spirit of innovation, continuously optimize product performance, provide better temperature control solutions for more industries, and work with customers to create a brilliant future.

 

Choose Hengde,Choose Perfect Mold Temperature Controller!

Water Mold Temperature Controller

Uses of single yarn strength tester

2025-07-04

Single yarn strength tester is an important testing equipment in the textile industry, mainly used to measure the mechanical properties of a single yarn. This precision instrument plays a key role in textile production quality control, product development and material research. The following are the main uses of single yarn strength tester:


1. Yarn strength test

(1) Determine the breaking strength (maximum tensile force) of the yarn.

(2) Measure the elongation at break of the yarn.

(3) Evaluate the breaking work (energy required to break) of the yarn.


2. Quality control

(1) Monitor the quality stability during the yarn production process.

(2) Detect the performance consistency of different batches of yarn.

(3) Provide objective data basis for product classification.


3. Process optimization

(1) Evaluate the impact of different spinning processes on yarn strength.

(2) Compare the impact of different raw material ratios on the performance of the final product.

(3) Optimize spinning parameters to improve yarn strength.


4. R&D application

(1) Performance evaluation of new fiber materials.

(2) R&D testing of special yarns (such as high-strength and high-modulus yarns).

Durability testing of functional yarns.


5. Standard Compliance Testing

(1) Conduct standardized testing in accordance with international standards (such as ISO, ASTM).

(2) Provide mechanical property data required for product certification.

(3) Meet special testing requirements specified by customers.



The test results of single yarn strength testers are of great significance for predicting the performance of yarn in subsequent processes (such as weaving and knitting) and the durability of the final textile products. Modern single yarn strength testers are usually equipped with computer control systems that can automatically record test data and generate detailed analysis reports, greatly improving test efficiency and result reliability.



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Automatic fabric vertical tester usage guide

2025-07-04

I. Equipment introduction

The automatic fabric vertical tester is a precision instrument used to measure the dimensional stability, tensile properties or drape characteristics of fabrics in a vertical state. Through the automatic control system, the equipment can accurately measure the deformation, elongation and other parameters of the fabric in a vertical hanging state, and is widely used in the fields of textile quality inspection, research and development, and production control.

II. Equipment composition

1. Main frame (including vertical guide rails).

2. Automatic clamping device (upper and lower clamps).

3. Force sensor system.

4. Displacement measuring device.

5. Control panel and display.

6. Data processing system.

7. Safety protection device.

III. Preparation before testing

1. Equipment inspection

(1) Confirm that the equipment is placed horizontally and the base is stable.

(2) Check that the power connection is normal (220V±10%, 50Hz).

(3) Confirm that all moving parts are well lubricated and there is no jamming.

(4) Check that the fixture is not damaged and the clamping surface is clean.

2. Sample preparation

(1) Cut the specimen according to the standard requirements (usually 300mm×50mm).

(2) The edges of the specimen should be flat and free of burrs.

(3) The number of specimens per group should be no less than 5.

(4) The specimen should be humidified under standard atmospheric conditions for at least 24 hours.

3. Parameter setting

Enter the test parameters through the control panel:

(1) Specimen length.

(2) Pre-tension (usually 5N).

(3) Test speed (standard is 100mm/min).

(4) Number of tests.

(5) Holding time (if necessary).


IV. Test operation steps

1. Power on and preheat:

Turn on the power, start the equipment, and preheat for 15 minutes

2. Fixture adjustment:

(1) Press the "fixture reset" button to return the upper and lower fixtures to the initial position.

(2) Adjust the fixture spacing to the standard distance (usually 200mm).

3. Install the sample:

(1) Place one end of the sample vertically into the upper fixture to ensure that there is no skew.

(2) Press the "upper clamp" button to fix the upper end of the sample.

(3) After applying pre-tension to the lower end of the sample, press the "lower clamp" button to fix it.

4. Start the test:

(1) Confirm that the safety protection device is closed.

(2) Press the "start test" button and the equipment will run automatically.

(3) Observe the sample status to ensure that there is no abnormality during the test process.

5. End of test:

(1) The equipment automatically stops and returns to the initial position.

(2) Record test data or print test report.

(3) Remove the tested sample.

6. Repeat test:

Replace new sample and repeat the above steps to complete the specified number of tests.

V. Data processing

1. The equipment automatically calculates and displays:

(1) Average elongation (%).

(2) Maximum force (N).

(3) Deformation recovery rate (%).

(4) Coefficient of variation (CV%).

2. Data export:

(1) Export test data through USB interface.

(2) Connect to computer and use special software for data analysis.

VI. Precautions

1. Safe operation:

(1) It is strictly forbidden to open the protective door during the test.

(2) Keep a safe distance when the equipment is running.

(3) Press the emergency stop button immediately in an emergency.

2. Maintenance:

(1) Clean the fixture and workbench after daily testing.

(2) Check the sensor accuracy regularly (recommended once every 3 months).

(3) Fill the guide rail with special lubricating oil every month.

3. Other precautions:

(1) Avoid using in a strong electromagnetic interference environment.

(2) When testing different fabrics, it is necessary to adjust the appropriate clamping force.

(3) Overloading will damage the force sensor.

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Guide to the Use of Yarn Length Measuring Instrument

2025-07-04

Yarn length measurement is an important part of quality control in the textile industry, used to measure parameters such as the length, linear density and twist of yarns. The following is the standard usage method of the yarn length measuring instrument:


I. Preparatory Work

1. Instrument inspection

(1) Confirm that the length measuring instrument is placed horizontally and all its components are intact.

(2) Check whether the counter, tensioning device and yarn guiding device are working properly.

(3) Clean the surface of the instrument and the yarn guiding components.

2. Environmental conditions

(1) Standard test environment: Temperature 20±2℃, relative humidity 65±3%.

(2) Avoid direct sunlight and strong air currents.

3. Sample preparation

(1) Take about 1.5 meters of yarn from the yarn barrel as the guide yarn.

(2) Remove the yarn segments with damaged or contaminated surfaces.


Ii. Operating Steps

1. Install the yarn

(1) Draw the yarn out from the bobbin and pass it through the tensioning device.

(2) Ensure that the yarn passes through all yarn guides without any cross-entanglement.

(3) Fix the end of the yarn on the winding shaft.

2. Parameter Settings

(1) Set the appropriate tension according to the type of yarn (usually 0.5cN/tex for cotton yarn and 0.25cN/tex for wool yarn).

(2) Set the winding length (the standard is 100 meters, and for short segment tests, it can be 10 meters or 20 meters).

(3) Set the number of pre-turns (usually 3 to 5 turns).

3. Start measuring

(1) Start the instrument, and the yarn begins to be wound evenly.

(2) Observe the winding process to ensure that the yarns are neatly arranged without overlap.

(3) The instrument will automatically stop when the set length is reached.

4. Data recording

(1) Record the actual length displayed by the counter.

(2) If the linear density is measured by the weighing method, remove the yarn frame for weighing (accurate to 0.01g).

(3) Calculate the actual linear density: Tex= weight (g)×1000/ length (m).


Iii. Precautions

1. Safe operation

Do not touch the moving parts when the instrument is in operation.

(2) Press the emergency stop button immediately in an emergency.

2. Measurement accuracy control

At least three samples should be tested for each batch of yarn and the average value should be taken.

(2) The tension fluctuation should be controlled within ±0.1cN.

(3) The winding speed should not be too fast (30-60m/min is recommended).

3. Maintenance and care

Clean the instrument after daily use.

(2) Regularly check the accuracy of the tension device.

(3) It should be calibrated by professionals every six months.


Iv. Common Problem Handling

1. Yarn breakage

(1) Check if the tension is too high.

(2) Check if there are burrs on the yarn guide.

(3) Confirm whether the strength of the yarn itself meets the standard.

2. Inaccurate counting

(1) Check whether the sensor is clean.

(2) Confirm whether the preset length unit is correct.

(3) Check whether the circuit connection is good.

3. Uneven winding

(1) Adjust the stroke of the yarn guide.

(2) Check whether the tension of the yarn is stable.

(3) Confirm whether the winding shaft is deformed.

The correct use of the yarn length measuring instrument can obtain accurate yarn length data, providing a reliable basis for subsequent quality control and process adjustment. Data should be recorded and archived in a timely manner after each test to facilitate quality tracking and analysis.

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How to use a yarn twist meter

2025-07-04

A yarn twist meter is an important instrument used in the textile industry to measure yarn twist (the number of twists per unit length). Its operating accuracy directly affects the evaluation of yarn quality. The following are detailed usage steps and precautions:


I. Instrument preparation

1. Equipment inspection

(1) Confirm that all parts of the twist meter (clamp, counter, rotating handle, etc.) are intact and can rotate flexibly.

(2) Check whether the dial or digital display is reset to zero to ensure that there is no residual data.

2. Calibrate the instrument

Use standard yarn or calibration rod for calibration, compare the measured value with the standard value, and the error must be within the allowable range (such as ±1%).

3. Environmental conditions

Operate in a standard temperature and humidity environment (such as 20±2℃, relative humidity 65±3%) to prevent the yarn from shrinking or stretching due to environmental changes.


II. Sample preparation

1. Sampling

(1) Randomly select at least 10 samples from the yarn batch, usually 25cm or 50cm in length (depending on the standard requirements).

(2) Avoid selecting yarn segments with joints or obvious defects.

2. Pre-humidification treatment

Balance the sample in the test environment for 24 hours to eliminate the effects of static electricity and humidity.


III. Test steps

1. Fix the yarn

(1) Fix one end of the yarn in the left clamp, and fix the other end in the right clamp after gently straightening it, ensuring that the yarn is not loose or overstretched.

(2) Adjust the clamping tension according to the yarn type (e.g. 0.5cN/tex is commonly used for cotton yarn).

2. Untwisting operation

(1) Manual mode: Slowly rotate the handle or knob to rotate the right clamp until the yarn twist is completely untwisted (fibers are parallel).

Automatic mode: After setting the parameters, start the instrument, automatically complete the untwisting and record the data.

3. Record the number of twists

(1) Observe the number of twists (T) displayed on the counter, or record it manually using the dial.

(2) Repeat the test 3 to 5 times and take the average value to improve accuracy.

4. Calculate twist

(1) Twist (twists/m) = number of twists (T) / sample length (m)

(2) For example: a 50cm sample is untwisted 30 times, then the twist = 30/0.5 = 60 twists/m.


IV. Precautions

1. Operating specifications

(1) The untwisting speed must be uniform (usually 10 to 30 turns/min). Too fast may cause yarn breakage or data distortion.

The clamp must be aligned to prevent the yarn from tilting or slipping.

2. Data Verification

If the difference between multiple test results of the same sample is greater than 5%, it is necessary to check the stability of the instrument or resample.


3. Maintenance

(1) Clean the clamp regularly to prevent fiber accumulation from affecting the accuracy.

(2) Add light lubricant to the rotating parts to maintain flexibility.


V. Application Standards

Test with reference to international standards (such as ISO 2061, ASTM D1422) or national standards (such as GB/T 2543.1) to ensure comparability of results.

Through standardized operation and regular calibration, the yarn twist meter can effectively evaluate the yarn strength and weaving performance, providing a reliable basis for quality control in textile production.



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How to use the ICI pilling tester

2025-07-04

I. Introduction to the instrument


The ICI pilling tester is a professional test device used to evaluate the pilling performance of fabrics under friction, developed by the British Chemical Industry Company (ICI). The instrument quantitatively determines the anti-pilling performance of fabrics by simulating the friction of fabrics in daily use.


II. Instrument composition


1. Test box: accommodates test samples and friction devices.

2. Friction head: with abrasives of specific specifications.

3. Sample fixture: fix the test sample.

4. Counter: record the number of frictions.

5. Control system: set test parameters.

6. Vacuum cleaner: remove fiber scraps generated during the test.


III. Operation steps

1. Preparation before testing

(1) Place the instrument on a stable workbench and ensure it is level.

(2) Connect the power supply and check whether all parts of the instrument are normal.

(3) Prepare standard abrasives and fabric samples to be tested.

(4) Cut samples according to standard requirements (usually circular samples with a diameter of 140 mm).

2. Sample installation

(1) Fix the sample flatly on the sample fixture to avoid wrinkles.

(2) Ensure that there is no initial fuzzing or pilling on the sample surface.

(3) Install the standard abrasive on the friction head.

3. Parameter setting

(1) Set the number of frictions according to the test standard (usually 100-5000 times).

(2) Set the appropriate pressure (commonly 125g or 155g).

(3) Select the test mode (unidirectional or bidirectional friction).

4. Start the test

(1) Close the test chamber door.

(2) Start the instrument and start the friction test.

(3) Observe the sample status during the test (through the observation window).

5. Post-test operation

(1) After the test is completed, turn off the power.

(2) Carefully remove the test sample.

(3) Clean the abrasive and test chamber and prepare for the next test.


IV. Result evaluation

(1) Compare the tested samples with the standard samples for rating.

(2) Commonly used rating standards:

A. 5-level system: 5 is the best (no pilling), 1 is the worst (severe pilling).

B. Text description: none, slight, moderate, severe.

(3) A magnifying glass or microscope can be used for more accurate evaluation.

V. Precautions

1. Calibrate the instrument regularly to ensure the accuracy of the test results.

2. Keep the abrasive clean and in standard condition, and replace it regularly.

3. The test environment should be controlled under standard temperature and humidity conditions (usually 20±2℃, 65±2%RH).

4. Appropriate test parameters should be selected for different fabric types.

5. The sample should be balanced in a standard environment for at least 24 hours before testing.

6. Avoid direct contact with the abrasive surface with your hands during operation.


VI. Maintenance

1. Clean the inside of the instrument after each use

2. Check the lubrication of moving parts regularly

3. Cut off the power supply and cover to prevent dust when not in use for a long time

4. Perform regular professional maintenance as recommended by the manufacturer

By using the ICI pilling tester correctly, the anti-pilling performance of fabrics can be objectively evaluated, providing important data support for textile development and quality control.

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Purpose of Textile Perspiration Color Fastness Tester

2025-07-04

Textile Perspiration Color Fastness Tester is a testing device specially used to evaluate the color stability of textiles after contact with sweat. It simulates the effect of human sweat (acidic or alkaline) on fabrics to detect whether dyes will fade, migrate or stain to ensure that the textiles maintain color durability during wearing or washing.


Main Purpose

1. Evaluate the perspiration color fastness of textiles

Test whether textiles (such as clothing, home textiles, sports fabrics, etc.) fade or stain after being soaked in sweat to ensure that they meet industry standards (such as AATCC 15, ISO 105-E04, GB/T 3922, etc.).

2. Optimize dyeing process

Help textile printing and dyeing enterprises improve dye formula and color fixing process, improve product color fastness level, and reduce color migration problems caused by sweat stains.

3. Ensure clothing quality and consumer safety

Prevent sweat from causing dye to fall off and stain the skin, especially suitable for close-fitting textiles such as infant clothing, sportswear, underwear, etc., to ensure safety and comfort.

4. Meet international testing standards

Used for third-party testing institutions, laboratories and corporate quality control to ensure that products meet the color fastness requirements of markets such as Europe, the United States, and Japan when exported (such as OEKO-TEX®, REACH regulations).

5. Research new functional fabrics

Test the color stability of functional fabrics such as antibacterial, deodorant, moisture absorption and perspiration in sweat environments to verify their durability.



Test principle

The tester usually simulates human sweat (artificial sweat is divided into acidic and alkaline types), fits the textile sample with a standard adjacent fabric (such as cotton, wool, etc.), keeps it at a specific temperature (such as 37±2℃) and pressure for a certain period of time, and then evaluates the discoloration of the sample and the staining of the adjacent fabric, and rates it according to a standard color card (such as a gray card) (1-5 levels, 5 is the best).


Applicable industries

Textiles and clothing: ready-made clothes, sportswear, underwear, socks, etc.

Home textiles: sheets, towels, curtains, etc.

Shoe materials: upper fabrics, linings, etc.

Testing agencies: quality inspection centers, third-party laboratories


Summary

Perspiration color fastness tester is a key equipment for quality control in the textile industry. It can effectively prevent fading problems caused by sweat, improve product quality and market competitiveness, and ensure consumers' health and comfort experience.


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The application of the yarn length measuring instrument

2025-07-04

The yarn length meter is a special device used in the textile industry to measure the length of yarn. Its main uses and functions include the following aspects:


1. Determine the standard length of yarn

It is used to accurately measure the actual length of a certain weight of yarn, or the weight of a certain length of yarn, and provide basic data for the subsequent calculation of yarn specifications (such as count, linear density).

Application scenarios: yarn production, trade acceptance, laboratory testing, etc.

2. Calculate the linear density (fineness) of yarn

By measuring the weight of a fixed length of yarn (or the length of a fixed weight of yarn), the linear density of the yarn (such as Tex, Denier, metric count, etc.) is calculated by combining the formula.

3. Detect yarn uniformity

By measuring the yarn length and weight in multiple sections, analyze the quality indicators such as yarn thickness uniformity and yarn unevenness.

Related standards: such as international standard ISO 2060, national standard GB/T 4743, etc.

4. Calibrate yarn packages

During the yarn winding process (such as bobbin yarn and hank yarn), ensure that the length of each roll of yarn meets the process requirements to avoid short or over-length problems.

5. Support textile process optimization

Provide accurate yarn data for subsequent processes such as weaving and knitting to help adjust process parameters (such as tension, yarn consumption, etc.).

6. Quality control and trade basis

In yarn trade, as a third-party testing tool, ensure that buyers and sellers agree on the length and specifications of yarn to avoid disputes.


Common types

Manual length gauges: such as the skein length gauge (used to measure the length of skein).

Automatic length gauge: with electronic sensors and software, it can automatically record data and generate reports.

Notes

The ambient temperature and humidity must be controlled during measurement (under standard conditions) to avoid yarn elongation or contraction affecting the results.

The instrument needs to be calibrated regularly to ensure accuracy.

The yarn length gauge is one of the key equipment for quality control in the textile industry, which directly affects yarn pricing and production efficiency.


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Advantages of TEYUN Container shear

2025-07-04

Container shears are a common metal processing equipment, mainly used for shearing metal materials such as plates and strips. Its advantages mainly include the following aspects:

 

1. Stable structure and high rigidity

Container shear usually adopt a box-shaped structure design, with strong overall rigidity, can withstand large shearing force, and are suitable for processing high-strength materials.

 

The stable structure reduces the vibration and deformation of the equipment during the shearing process and improves the processing accuracy.

 

2. High shearing accuracy

Due to the good rigidity of the container shears and the precise adjustment of the blade gap, the flatness and verticality of the shearing surface can be guaranteed, which is suitable for processing with high precision requirements.

 

It is suitable for occasions with high requirements for incision quality, such as precision sheet metal processing.

 

3. Wide range of applications

It can shear a variety of metal materials, such as low carbon steel, stainless steel, aluminum alloy, copper, etc.

 

It can handle plates of different thicknesses and widths and has strong adaptability.

 

4. Good safety performance

Equipped with protective devices (such as photoelectric protection, two-hand operation buttons, etc.) to reduce operating risks.

 

The stable structural design reduces the occurrence of accidents.

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