Yang Min is a professional spring manufacturer within 35 years experience, all the spring produce processes are in-house, without out-sourcing in here. We are using cold-winding for the forming process, It means Yang Min is kind of Environmental protecting Enterprise. We do care about the environment and we do care about the earth and human being. Meantime , we acquired ISO/TS 16949 quality certification at the end of 2005, therefore, we do believe that our product can achieve your needs. Now, You can contact our sales representative for the inquiry, Let us have chance to show you Yang Min quality and ability, also the service.