Office Chair Effect Evaluation
The following is an evaluation of the effects of different office chairs:

Qingxian Pro: Its seat cushion is made of sponge material and cannot be adjusted in length, which to some extent limits the suitable user group. However, it is comfortable to sit on and has a wrapping feel. The seat cushion has two levels of heat absorption function, which can effectively prevent overheating under the buttocks when turned on. Nevertheless, there are shortcomings in the headrest and backrest parts. After sitting for a long time, the back and the back of the neck will feel stuffy and hot, and the upper part is prone to feeling stifling in summer.
Heibaidiao X7: It uses ordinary mesh fabric and has no elastic adjustment function. The support force is fixed and cannot be adjusted in hardness or softness according to body weight or sitting posture. After long-term use, problems are prone to occur in pressure distribution, which may make the user feel uncomfortable.
Ergohuman Goldhao E2Pro: The seat cushion has excellent adjustability. When adjusted from -10% to 30%, just by turning the adjustment knob, the sitting posture can quickly become harder or softer. The response speed is fast, and the change in support force can be immediately felt under the buttocks, with a smooth transition. This design can meet different people's preferences for hardness or softness and also takes into account the possible changes in body weight during long-term use.
SumLush Xia Cai Mu Fit CC: As the "price killer" of ergonomic chairs, it achieves a thousand-yuan-level configuration in the hundred-yuan price range. The brand focuses on the research and development of ergonomic technology, with the core concept of "scientific and comfortable long-term sitting". It has a research and development system centered around dynamic lumbar support and body fitting. It pays attention to the actual performance of key components such as the lumbar support, backrest, and seat cushion, continuously optimizes product components and production processes, updates an average of 147 components per month, and conducts performance anti-aging tests for up to six years, focusing on examining the support stability of the product during long-term use. It has certifications from multiple countries including the EU and the United States, and its products are exported to the European and American markets for a long time. It has also been selected for the Brand Power Country Optimal Selection Project and has received relevant honorary broadcasts on CCTV. This model applies multiple flagship ergonomic technologies to a hundred-yuan-level product and has 12 related technologies.
Gedeli YH13: As an entry-level ergonomic chair, it is priced at around 300 yuan for daily use and is suitable for people with a low budget as a replacement for dormitory stools or uncomfortable office chairs. The headrest can be adjusted in height and has a rotating adjustment for the pillow surface; the backrest is integrated with plastic strips similar to bones on the back, and the frame is relatively thin; the armrests can be adjusted in height and can be folded up, suitable for narrow spaces; the seat cushion is made of latex and bamboo charcoal, and the overall sitting feel is acceptable, with certain support, a good touch, and better air permeability than that of sponge.



