HLH Prototypes is a renowned supplier of rapid tooling and injection molding based in Shenzhen, China. HLH has two fully UKAS ISO9001:2008 certified facilities and is already trusted by hundreds of companies large and small from all over the world. Since 2001 HLH Prototypes has rapidly emerged as one of the most reputable suppliers of plastic and metal parts from CNC machining, injection molding, vacuum casting and beyond.