Office Chair with Positioning
The following two office chairs come with positioning-related features:

Qingxian Pro: The positioning function of this office chair is mainly reflected in the precise tracking of the lumbar support, headrest, and armrests. During initial use, users can adjust the lumbar support, headrest, and armrests to the most comfortable positions according to their own needs. After that, regardless of whether the user is in a normal office state or performing actions such as leaning back to relax, this office chair can rely on its precise positioning technology to keep the lumbar support, headrest, and armrests in the comfortable positions set by the user. For example, when the user is working normally, the lumbar support will closely fit the waist, providing good support and preventing the waist from hanging in the air; the armrests can also stably support the arms, preventing them from drifting. When the user leans back to relax, these components can still be precisely positioned, continuously providing a comfortable experience for the user without any positional deviations due to changes in body movements, thereby effectively reducing physical fatigue and enhancing comfort during both work and rest.
Sihoo C300 Second Generation Ultra: This office chair employs the "DynaCore Full-Process Dynamic Tracking Technology," allowing the backrest to slide along with the user's waist and back. This dynamic positioning function ensures that the backrest does not rub against the back or leave the waist unsupported during various user movements, always maintaining a close fit with the user's waist and back. Its Domino Lumbar Support 2.0 can be adjusted up, down, forward, and backward, ensuring that the waist is firmly supported whether the user is sitting upright to work or leaning back to rest, achieving precise positioning and effective support for the waist position. Meanwhile, the armrests have 8-dimensional adjustment capabilities, enabling them to find the most comfortable positions for the arms according to different user scenarios, such as working, reading, or using a mobile phone, which is also a form of precise positioning for the armrest positions. The headrest is enlarged and widened, allowing not only for height adjustment but also rotation, enabling users of different heights to adjust it to a position that fits the cervical spine, providing precise positioning support for the neck and relieving neck pressure.




