Office Chair - Employee Chair

There are various types of employee chairs, with ergonomic chairs being representative. When purchasing, it is necessary to comprehensively consider factors such as functionality, size, material, and quality safety.

I. Typical Characteristics of Ergonomic Chairs Taking the Sihoo B300 and B300Pro as examples, these chairs are specifically designed for prolonged sitting. Their core functions include:

1. Dynamic Support System: The backrest supports vertical adjustment and is paired with a 4D micro-adjustable lumbar pillow. This allows for precise positioning of the lumbar spine according to height and sitting posture, providing dynamic support and reducing fatigue from prolonged sitting.
2. Multi-Dimensional Adjustment Functions: These cover adjustments to the headrest, armrests, seat depth, and other parts, adapting to different body types and office scenarios. For instance, when sitting upright, proper posture can be maintained through the support of the lumbar pillow and seat cushion. When reclining for rest, the range of motion of the backrest and the adjustment method of the base can enhance comfort.

II. Key Parameters for Selection

1. Size Suitability:
   • Seat Height: Ensure that both feet can naturally rest on the ground to avoid leg suspension or pressure on the thighs.
   • Seat Depth: There should be a gap of 2-3 fingers between the front edge of the seat and the back of the knee to prevent pressure on blood vessels and nerves.
2. Matching Sitting Habits:
   • For those who sit upright for office work, focus on the support strength of the lumbar pillow, the firmness of the seat cushion (mesh fabric is breathable but firmer, while sponge is soft but requires attention to the sense of enclosure), and the height adjustment range of the armrests.
   • For those who often recline for rest, check the recline angle of the backrest (recommended 110°-135°) and the locking stability of the base to avoid sliding or tipping over when reclining.
3. Material Safety:
   • Mesh fabric offers good breathability and is suitable for high-temperature environments, but attention should be paid to the load-bearing capacity of the frame. Sponge seat cushions should be made of high-density foam to avoid sagging after long-term use.
   • The gas lift should pass international certifications such as SGS and TUV to prevent explosion risks. The five-star base material should preferably be aluminum alloy or nylon reinforced with fibers to ensure load-bearing stability.

III. Quality and Safety Risk Warnings Recent market supervision data shows that quality issues with office chairs mainly focus on stability defects and structural safety hazards:

1. Recall Cases: In 2023, office chairs produced in China were recalled in the United States and Canada due to the risk of backrest breakage. In 2025, the WorkPro Momentum chair was recalled in the United States due to bolt failure leading to a falling hazard.
2. Inspection Problems: In the 2024 national supervision and inspection, 15 batches of products failed, mainly due to insufficient base strength and wheel detachment, which could lead to tipping accidents. It is recommended to prioritize products that have passed the GB/T 38611-2020 "Office Chairs" national standard certification and regularly check the wear and tear of components such as the gas lift and wheels.