... 1.Product specifications:1.Caster materials:Plastic2.Loading capacity: 15 to 40kg per caster3.Wheel diameters: 30, 40,50mm4 ... corrosion-resistance. Now it already has become a professional caster company which integrates design, manufacture, assemble, inspection and ... , for industrial machine, medical facility, furniture, trolley, shopping cart, forklift, scaffold, shelf, etc.Welcome to our company to ...