Low-Quality Office Chair Filling

Low-quality office chair filling materials mainly include black-hearted cotton, recycled sponge, mixtures of waste sponge and moldy wood, and mixtures of crushed sponge with cloth strips and stones. These materials pose health risks and do not meet normal process standards.

1. Black-Hearted Cotton
   Some ergonomic chairs with monthly sales of 20,000 units have been exposed to be filled with "black-hearted cotton." The cushions contain colorful crushed sponge pieces glued together. Although merchants claim such materials are "native blended cotton" and compliant with national standards, they are actually recycled industrial waste that may contain a large amount of bacteria and chemical residues. Long-term exposure can easily trigger skin allergies or respiratory diseases.

2. Recycled Sponge
   The cushions of chairs purchased online for several hundred yuan often use recycled sponge, which is made by gluing together sponge waste. This material costs only half as much as native sponge but has two major problems: first, the glue may release harmful gases such as formaldehyde, causing indoor air pollution; second, the support and durability of recycled sponge are poor, making it prone to collapse and deformation, which affects sitting posture health.

3. Mixture of Waste Sponge and Moldy Wood
   The popular "Liu Liu Stool" priced at 89.9 yuan has been revealed to be filled with moldy wood, waste sponge, and even construction waste. Such materials not only have extremely poor hygiene conditions, but the moldy wood may breed mold, and the sharp objects or heavy metal components in the construction waste directly threaten the safety of users.

4. Mixture of Crushed Sponge with Cloth Strips and Stones
   The cushions of some ergonomic chairs with monthly sales exceeding 20,000 units are filled with colorful crushed sponge, cloth strips, and even stones, emitting a pungent odor. Merchants claim this is the "normal process" of "native blended cotton," but it is actually a crude mixture of recycled materials that lacks basic ergonomic support. The odor may originate from harmful chemicals, and long-term use is harmful to health.

Summary: Low-quality office chair filling materials are mainly low-cost recycled materials that are glued together or simply mixed, posing hygiene risks, chemical pollution, and poor support. Consumers should avoid low-price traps when purchasing and prioritize products that have passed safety certifications and have transparent filling materials.