HH Plastic Metal CO.,LTD HH Plastic Metal Co.,Ltd is based in Shenzhen, China’s commercial heartland. We’re an ISO 9001-certified firm that specialises in the design and production of highly technical moulds, primarily for the Automotive industry Providing a complete world class solution for plastic injection moulding, precision tooling, moulded parts, associated fixtures, and end of arm tooling. We design and manufacture tooling up to 40 ton. Single Impression Multi-Cavity Twin Shot Gas Injection In Mould Transfer Multiple Hot Feed Over Mould Insert Moulding Back Injection Prototype Tooling