Small common sense of coated sand
Coated sand is mainly selected high-quality natural quartz sand as raw sand, thermoplastic phenolic resin, urotropine and reinforcing agent as raw materials. According to the different skills of the user needs, in the curing speed, film removal, fluidity, collapsibility, casting appearance finish, storage and other aspects of the appropriate adjustment ratio. It is one of the best modeling materials for cars, tractors, hydraulic parts, etc.