Harm of static electricity to humans: With a very large amount of charge on the surface of an object, creating an extremely strong magnetic field in the surrounding environment, in the long term, will affect human health, especially the system. nervous system, genitourinary system, circulatory system..

Thanks to combinations of tapered bearing in swivel head, the caster moves lightly and turns easily even under a heavy load. PU tread wheel is durable, wear resistant and floor protection.