... GB/DIN/ASTM/JIS/BS ,ect . Production Process:we have the following four workshops , ONE : ... WORKSHOP Testing Equipment DESCRIPTION: 1 Technology:precision casting; investment casting; water glass; lost wax2 Standards:ASTM, AISI, BS, DIN, ... ,electricinductionfurnace,grindingmachine,peeningmachine,drillingmachine,3D paralleling vibrating casting machine,arc welding machine, wax injection machine ...