Office Chair Risks

The risks associated with office chairs mainly include explosions, base fractures, excessive formaldehyde emissions, non-compliant flame retardancy, and不合格 (should be 'non-compliant') caster wear, among others. These risks require serious attention and preventive measures.

1. Explosion Risk
   Pneumatic swivel chairs rely on gas cylinders for height adjustment. If the quality of these cylinders is substandard (e.g., thin cylinder walls, impure inert gases, or the use of compressed air instead of nitrogen), an explosion may occur due to a sudden increase in internal pressure. For example, in 2009, a 14-year-old boy in Jiaozhou, Shandong, died from an exploding swivel chair, and in 2013, Ms. Liu in Xiamen was injured by an exploding chair. The direct causes of explosions include insufficient nitrogen purity, inadequate strength of the cylinder walls, poor sealing of the cylinder opening, or excessive temperature rise due to frequent height adjustments causing gas expansion.

2. Base Fracture Risk
   If the five-star base of a swivel chair is made of inferior materials (e.g., metal or plastic with thin walls), it may fracture under significant pressure. For instance, during testing, some five-star bases cracked immediately after a force of 7,560 Newtons was applied, causing the user to fall and sustain injuries. Such risks often arise because companies choose low-strength materials to reduce costs or fail to install reinforcing ribs at critical points.

3. Excessive Formaldehyde Emission Risk
   If inferior materials are used for the fabric, padding, or engineered wood of an office chair, excessive formaldehyde may be released. Prolonged exposure to excessive formaldehyde can cause chronic respiratory diseases and even increase the risk of cancer. Such risks are common in low-priced products, as companies use cheap materials with high formaldehyde content to cut costs.

4. Non-Compliant Flame Retardancy Risk
   Office chairs with non-compliant flame retardancy cannot effectively resist flames in a fire and may even contribute to the spread of the fire, causing serious casualties. Such risks often occur because companies do not treat the materials with flame retardants or use flammable materials to reduce costs.

5. Non-Compliant Caster Wear Risk
   If the casters do not pass wear resistance tests, they may cause mobility issues or sudden breakage due to wear, affecting safety. For example, inferior casters may become stuck or detach after prolonged use, causing the chair to lose control.

Reasons for High Incidence of Risks
The core reason for the high risks associated with non-compliant office chairs is that companies use inferior materials (e.g., inferior gas cylinders, five-star bases, or fabrics) to reduce costs and cut corners (e.g., by not installing explosion-proof steel plates, reinforcing ribs, or flame-retardant layers). Consumers should choose products that have passed national safety certifications and avoid purchasing low-priced, inferior office chairs to reduce safety risks.