Investment casting equipments:We learnt precision casting technolgy from Japan and Taiwan, meanwhile, combined with the special conditions of Chinese precision casting to design and manufacture the precision casting equipments,which consist of wax injection machine, shell making and drying line, recovery buckets, high frequency induction melting furnace, electrical baking furnace, shot blasting machine and so on,among which the mechanical hand used to make shell and coat mud fluid is our patent and it is the latest in China.