New Office Chair with Height Adjustment

There are various types and brands of new office chairs with height adjustment functions available for selection.

I. Brands and Features of Some New Height-Adjustable Office Chairs

1. Jingdong Make Z5 Pro Ergonomic Chair: This office chair is equipped with a 50mm adjustable backrest. This design allows users to precisely find a comfortable support area according to their own height and sitting habits, effectively reducing back pressure and enhancing comfort during long hours of office work.
2. C3 Pro Bear Girl Ergonomic Computer Chair for Women: This office chair is positioned as a height-adjustable chair designed for comfortable long-term sitting. It fully takes into account the physical characteristics and usage needs of female users. In addition to the height adjustment function, it may also feature other ergonomic designs that fit the female body, such as more suitable seat cushion curves and backrest contours, to ensure that female users can remain comfortable during long hours of office work.
3. Sihoo M90 Ergonomic Chair: Its seat height ranges from 45 to 55cm, which means users can flexibly adjust the seat height according to their leg length and desk height, allowing their feet to be placed flat on the ground, maintaining a correct sitting posture, and reducing physical fatigue and injuries caused by improper sitting postures.

II. Classification and Features of Height-Adjustable Chairs

1. Pneumatic Height-Adjustable Chairs: These are the mainstream in the current market, accounting for over 80% of usage in office buildings and companies. Their core component is a pneumatic rod (gas spring), which is filled with high-pressure nitrogen to achieve height adjustment. Regular products will have safety rating labels, such as SGS-certified Class 3 or Class 4. Users can pay attention to these safety certifications when choosing to ensure usage safety.
2. Hydraulic Height-Adjustable Chairs: The key part is a hydraulic jack, which has a compact structure and can lift steadily. However, it has the drawback of being prone to oil leakage and, due to its high cost and relatively complex structure, has less sensitive height adjustment and a lower market share in China.
3. Screw-Type Height-Adjustable Chairs: These achieve position locking through screw-pair self-locking, with a simple structure and high safety. However, their durability is not ideal, and they may experience uneven height adjustment after long-term use.