... upsetting machine. In 2005, after National key enterprises China National Erzhong Group, China National Yizhong Group, Taizhong, Shenzhong, it ... Chemical Products Starting from 2001, after 2 years of hard work, alkaline phenolic, foundry coating and mating curing agent---National ... used in machinery products, automobiles, electrical appliance, construction and decoration, furniture and other fields. The ...