Kai Wu

Precision Components Ltd. manufactures helical screw rotors and parts. Its products are used for a variety of complex industrial applications including air conditioning and refrigeration, vacuum pumps, blowers, expanders, screw-compressors, hydraulic pumps, gas processing, and superchargers. The company was founded on June 25, 2007 and is headquartered in Rochdale, the United Kingdom.

PTG Heavy Industries Ltd. manufactures machine tools specializing in boring machines and lathes. The firm engages in the design, manufacture and re-engineering of machine tools. The company was founded on May 16, 2008 and is headquartered in Elland, the United Kingdom.

Holroyd Precision Ltd. specializes in the design, build, and supply of high-precision gear, rotor, screw, and thread milling, grinding, and friction stir welding machines. The company is based in Rochdale, UK and ultimately controlled by the City of Chongqing. The British company emphasizes the importance of Planned Preventive Maintenance to ensure their machines run like new and that their customers get the most out of their investment. Holroyd is a world-leader in precision tooling for the friction stir welding process and has set the benchmark for superior component manufacture technologies using friction stir welding and rotor milling and grinding machines.