Diamond H Controls has operations in both the UK and China and is a leading appliance controls supplier with over 80 years experience in the design, development and manufacture of domestic appliance controls.We offer a comprehensive range of electric, gas and electronic controls designed to exceed the vision of appliance manufacturers in the 21st century.Manufacturing to ISO9001/2000 at our facilities in Norwich, England and Shenzen, China, Diamond H produces controls to all International Approval Standards and services Appliance Manufacturers through a world wide network of agents and distributors.