We are dedicated to the supply of the best quality products and services,and we have developed HHI's own quality assurance program which complies with the requirements of ISO9001-1994, the most authoritative International Organization for Standardization (ISO), to assure that products manufactured by HHI are designed, manufactured, inspected, tested and delivered in an efficient manner,also, focus on the human element,which we consider the most important in our efforts to enhance safety as well as environmental protection in accordance with ISO 14000.