Dongying hengda auto-tech development Co., LTD, is a professional manufacturer of electric power switch accessories, specializing in the production of cooper, aluminum alloy casting in China. We own strong technical force, and the core machine, automatic control shot of die casting machines, CNC processing equipment and the testing equipment such as PID control well type, electric heat treatment equipment and water pressure box, air pressure, physical and chemical analysis, the hardness tester, etc. have been brought in. According to the national standard cast aluminium, we have the perfect quality guarantee system in material purchase, new technology, production process, product inspection. And we enjoy high reputation among our clients. The main products of the company are a series aluminum casting, such as ZN28, ZN12, ZN65, ZW7, LW30, ZF10-126 etc. Meanwhile we are in famous of varieties and complete in specification, reasonable prices, timely delivery, and products throughout the country. We always adhere to the principle of the quality first, and the supremacy of users. To exploit market with quality, to satisfied with customers with innovation products and high quality service, to promote development with improve.