CCTV Exposes Explosion Risks and Quality Issues in Deformed Office Chairs

CCTV primarily exposed the explosion risks and quality issues associated with unqualified deformed office chairs (pneumatic swivel chairs). Details are as follows:

I. Overall Inspection Findings
The State Administration for Market Regulation conducted a supervisory inspection of 90 batches of office chair products from 90 enterprises across 11 provinces and municipalities. The results showed that 21 batches were unqualified, with a batch failure rate of 23.3%. Among these, office swivel chairs accounted for the majority of unqualified products, with 17 out of the 21 unqualified batches being swivel chairs.

II. Analysis of Unqualified Reasons

1. Poor-Quality Pneumatic Rods
   The core component of a pneumatic swivel chair is the gas spring (pneumatic rod), which enables seat height adjustment through the use of inert gases (such as nitrogen) inside. If the pneumatic rod has the following issues, it may cause an explosion:

• Thin tube walls: Unable to withstand internal pressure, prone to rupture;
• Impure gases: Using compressed air instead of inert gases, which are chemically unstable;
• High temperatures from frequent height adjustments: Prolonged use or improper operation may cause the pneumatic rod to heat up, increasing the risk of explosion.

2. Absence of Explosion-Proof Steel Plate
   The explosion-proof steel plate is a crucial protective device that prevents the pneumatic rod from puncturing the seat cushion in the event of an explosion. It must be installed between the pneumatic rod and the seat cushion, with a thickness of no less than 2 millimeters. Some products lack this installation or have insufficient plate thickness, resulting in direct impact from fragments during an explosion, causing severe injuries.

3. Thin Tube Wall and Poor Strength
   If the five-star base (support base) of the swivel chair is made of materials with thin tube walls or poor strength (such as inferior metals or plastics), it may break under excessive weight or external impact during daily use, causing the user to fall and get injured.

III. Other Relevant Information
The Sunon Yunge smart chair mentioned in the reference information, although featuring ergonomic design, nine adjustable functions, and health monitoring innovations that can alleviate issues such as obesity and lumbar muscle strain caused by prolonged sitting, is an example of an improved qualified product and has no direct connection to the quality issues of the unqualified deformed office chairs exposed by CCTV.

Advice to Consumers: When purchasing office chairs, prioritize products that have passed national safety certifications. Check whether the pneumatic rod has explosion-proof design, whether the material of the five-star base is sturdy, and avoid frequently adjusting the seat height to reduce risks.