| Place of Origin: | CHINA |
|---|---|
| Brand Name: | LENSUN |
| Certification: | Yes |
| Model Number: | LS-2003A |
| Minimum Order Quantity: | 100 PIECES |
| Price: | 27-32USD EACH ONE |
| Packaging Details: | 66*40*66CM 2PCS/CTN 790PCS 1*40HQ |
| Delivery Time: | 30-35days |
| Payment Terms: | L/C, T/T, Western Union, D/A, D/P |
| Supply Ability: | 30000PIECES |
| Material: | Wood | Color: | Optional |
|---|---|---|---|
| Back Height: | 35CM | Seat Height: | 46.5-57.5cm |
| Product Name: | Velvet Midback Adjustable Executive Office Chair | Type: | Office Chair |
| High Light: | liansheng 57.5cm Yellow velvet upholstered office chair,liansheng 57.5cm 35cm velvet upholstered office chair,liansheng 57.5cm upholstered modern office chair |
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Packing and Delivery
| Quantity(Pieces) | 1-1000 | 1000-5000 | More than 5000 |
| Lead Time (Days) | 35 | 45 | To be negotiated |
FAQ
Before adjusting your office chair, there are several preparations and considerations that can help ensure that your office chair is adjusted for comfort and good health. Here are the preparation activities:
1. Adjust desk height
First of all, adjusting the height of your desk is an important preparation. This is because different desk heights will affect the placement of office chairs. Ideally, when your arm hangs naturally, your forearm should be at a right angle to the table. If the height of the tabletop is not adjustable, you can raise the tabletop to the appropriate height by raising the table legs or using foot pads.
2. Make sure your feet are flat
When adjusting your office chair, it is critical to keep your feet flat on the floor. The correct sitting posture should be with the knee joint flexed approximately 90°. If there is no space between your thighs and the seat cushion, lower the seat or use a footrest.
3. Measure the distance from your calf to the edge of the seat
To ensure maximum lumbar support, measure the distance from your calf to the edge of the seat. This distance determines the depth of the seat. The correct depth can avoid slumping or hollowing of the waist. If there is a large space between the calf and the front edge of the seat, the backrest should be adjusted to move backward to increase the seat depth.
4. Adjust backrest height and angle
The height of the backrest should be able to fit the curvature of the lower back and provide maximum support. The angle of the backrest should also be adjusted to fit your waist. Not all office chairs allow you to adjust the back height and angle, but if you can, this will greatly improve comfort and reduce stress on your spine.
5. Adjust armrest height
The height of the armrest should ensure that the elbow does not or barely touches the armrest when flexed 90°. This helps maintain correct arm and wrist posture, reducing muscle fatigue and the risk of injury.
6. Consider using an adjustable footrest
If space permits, consider using an adjustable footrest to support your thighs. This helps maintain correct leg posture and reduces stress on the spine and lower back.
7. Get up and move regularly
Staying in the same position for a long time is not good for your body. Therefore, remember to get up and move for at least one to two minutes every half hour. Even simple stretches or going to the bathroom can help relieve physical tension and stress.
Through the above preparation activities, you can lay a solid foundation for comfortable office chair adjustment and effectively maintain good posture and physical health in your daily work.
1. Prevent and relieve back pain
Lumbar support in office chairs is crucial for people who sit and work for long periods of time. Improper sitting posture can cause waist muscle tension and strain, which may cause back pain in the long run. Waist support pads can effectively support the waist and prevent waist muscles from being overworked, thereby preventing and relieving waist pain.
2. Maintain correct sitting posture
Correct sitting posture is the key to preventing back pain. The lumbar support of office chairs can help maintain the normal physiological curvature of the lumbar spine and avoid excessive tension in the waist muscles. In addition, some lumbar support cushions can be adjusted according to an individual's body shape to accommodate different sitting needs.
3. Improve work efficiency
Comfortable lumbar support can reduce distractions caused by low back pain, thereby improving work efficiency. A good office chair can provide sufficient lumbar support so that users can still feel comfortable after working for a long time and will not have to take frequent breaks due to low back pain.
4. Promote health
Proper lumbar support can not only prevent and relieve low back pain, but also promote overall physical health. Proper sitting posture can reduce pressure on the cervical spine and back, help improve body posture, and reduce other health problems caused by sitting for long periods of time.
5. Reduce the occurrence of occupational diseases
Back pain is one of the common occupational diseases among people working in offices. The occurrence of this disease can be reduced to a great extent by using an office chair with good lumbar support. In addition, some lumbar support cushions have heating and ventilation functions, which can further improve user comfort and reduce the risk of occupational diseases.
To sum up, the lumbar support of office chairs is of great significance for maintaining a good sitting posture, preventing and relieving back pain, improving work efficiency, and promoting overall health. Therefore, when choosing an office chair, you should pay special attention to its lumbar support function.
The discomfort of office chairs may be caused by many factors, including the following aspects:
1. Inappropriate chair height
If the chair is not at the right height, it may result in the need to look up or down while working, which can increase stress on the neck and shoulders, causing fatigue and discomfort. The correct approach is to adjust the seat height to ensure that the seat is slightly lower near the knees.
2. Lack of support
If the chair's back, seat, and armrests are not supportive enough, it can cause excessive pressure and weight on the body, leading to fatigue and discomfort. A good ergonomic chair should have good support for the neck, shoulders and spine.
3. Wrong sitting posture
Wrong sitting posture, such as hunching over, extending the head forward, or hunching the shoulders, can lead to physical discomfort and fatigue. The correct sitting posture is: feet flat on the ground, back against the back of the chair, shoulders relaxed, and head kept vertical.
4. Office chair quality issues
Office chairs on the market vary in quality, and some may have problems such as broken bases, casters falling off, and even risks of excessive formaldehyde and explosion. These problems will not only affect the service life of the chair, but may also cause harm to the user.
5. Unsuitable human body size
Everyone's body shape and weight are different, and even an office chair with a lifting function may not fully meet the needs of a petite person. This can lead to challenges in adjusting posture for optimal comfort, impacting productivity and comfort.
6. Airtight cushion material
If the cushion material is not breathable, it may make sitting uncomfortable, especially in the hot summer months. The high-quality mesh material is more breathable, and various properties are more conducive to the user's comfort.
To sum up, there are many reasons why office chairs are uncomfortable, including inappropriate chair height, lack of support, wrong sitting posture, quality issues, inappropriate human body dimensions, and non-breathable cushion materials. In order to improve work efficiency and health, it is very important to choose a suitable office chair, and to use and maintain it correctly.
The quality of office chairs is an issue worthy of attention because it directly affects the health and safety of office workers.
Main problem analysis
Safety issues: Air pressure swivel chairs will frequently use air pressure rods during use. If the safety is not up to standard, it will not only affect the service life of the chair, but may even cause an "office chair explosion." Once this happens, it will cause irreversible harm to the user.
Material quality: In order to reduce costs, some companies cut corners on key components, causing the base, casters or five-star legs of office chairs to break. Some office chairs even release excessive amounts of formaldehyde, which may cause harm to the health of users. harm.
Stability issues: Office chairs with unqualified stability are prone to tipping over when users lean forward, backward, or sit sideways, which may cause injuries to consumers and pose safety risks.
Potential risks to user security
Due to the common quality problems of office chairs, users need to pay special attention when choosing office chairs. For example, the quality of the air pressure rod is directly related to the life safety of consumers. If the wall of the air pressure rod is too thin, the inert gas is impure, or even compressed air is used to pretend to be inert gas, it may cause the swivel chair to explode.
In addition, the amount of formaldehyde released by office chairs is also a problem that cannot be ignored. If the material quality is not up to standard, users may be exposed to harmful substances for a long time and increase the risk of cancer.
How to choose a quality and reliable office chair
In order to ensure the quality of office chairs, users should pay attention to the following points when purchasing:
Check whether the pneumatic rod has safety certification, and choose products that have brand protection and have passed the national ISO9001 safety and quality certification or certification by authoritative organizations such as SGS/BIFMA/TUV.
When choosing an ergonomic office chair, pay attention to the support effect of the chair back and lumbar support, and whether the adjustment function can adapt to the needs of different heights, weights, and sitting postures.
Considering stability, choose products with solid chair legs and wheels.
Pay attention to the amount of formaldehyde released by office chairs and choose qualified products to ensure indoor air quality.
To sum up, office chair quality problems do exist and may have a serious impact on the health and safety of users. Therefore, when purchasing office chairs, users should choose products with reliable quality and pay attention to product safety, material quality and ergonomic design.
Detection method for formaldehyde content in office chairs
Formaldehyde is a common indoor air pollutant, especially in new office furniture. Whether the formaldehyde content reaches the standard is directly related to the health of employees. The following are several methods for testing the formaldehyde content of office chairs:
1. Use professional formaldehyde detection equipment
Professional formaldehyde detection equipment can be used for detection. This method is more accurate, but requires professional knowledge and equipment. There are currently some formaldehyde detection kits on the market, and you can judge whether the formaldehyde content exceeds the standard by comparing the color changes of the detection kits4. In addition, there are some physical and chemical methods, such as AHMT spectrophotometry, phenol reagent spectrophotometry, gas chromatography electrochemistry, sensor method, etc. These methods are more accurate, but require professional personnel and technical equipment.
2. Self-feeling method
Make judgments based on your own feelings. For example, after the whole family moves into a new home, symptoms such as a collective cold, decreased immunity, easy headaches and dizziness, or pets are sick, have a loss of appetite, etc. These may be signs that formaldehyde exceeds the standard. However, it should be noted that the accuracy of this method is low and can only be used as a preliminary judgment.
3. Animal and plant response method
Observing the reactions of animals and plants can also detect formaldehyde to a certain extent. For example, plants wither and die or pets have abnormal reactions, such as illness, loss of appetite, etc. This may also be a sign of excessive formaldehyde.
4. Extraction method and dryer method
Extraction method and dryer method are two professional detection methods. The extraction method separates free formaldehyde from the board through perforation extraction, and then determines the formaldehyde content photometrically163. The desiccator rule is to place a crystallizing dish filled with distilled water at the bottom of the desiccator to absorb the released formaldehyde, then use a spectrophotometer to measure the absorbance of the sample solution, and obtain the concentration of formaldehyde from the pre-drawn standard curve.
5. Standard value of formaldehyde content
In China, the national standard for formaldehyde content is ≤0.1mg/m³1510. When purchasing office furniture, you can ask the manufacturer to provide a quality inspection report to understand whether the formaldehyde emission is within the allowable range of the standard.
Precautions
During the testing process, personal protection should be paid attention to and avoid direct contact with formaldehyde and other harmful substances.
Formaldehyde testing should be performed after the office chair has been left for a period of time in order to obtain more accurate results.
If there are sensitive groups such as the elderly and children at home, more attention should be paid to the detection and control of formaldehyde content.
To sum up, testing the formaldehyde content of office chairs can be carried out by using professional testing instruments, observing the reactions of animals and plants, and referring to standard values. In actual operation, it is recommended to combine multiple methods for judgment to ensure the accuracy of the results.