
Why Casters Wheels Use Polyurethane?
Trolley PU caster wheel is widely used. Polyurethane referred to as spring glue, is the abbreviation of polyurethane or isocyanate polymer. Polyurethane is a kind of high polymer material, it is a kind of elastomer interposed between plastic and rubber. Polyurethane is an emerging organic polymer material, known as the “fifth largest plastic”. It is […]









