Yindi equipped with 10 sets of automatic cold chamber die casting machines from 160 to 1250 tons. Mainly Yizumi and Toshiba die casting machines. Cold chamber die casting machine are more suitable for alloys with high melting points and cannot be cast in hot chamber machines as aluminium die casting can damage the pump system. During cold chamber aluminium pressure die casting, the metal is liquefied and then pulled into the cold chamber, where a hydraulically driven plunger forces the molten metal through the jet chamber and into the jet sleeve in the mold.