HUIZHOU JINLONG PRECISE VACUUM HEAT TREATMENT CO.LTD.was established in October 2010 is a professional processing of heat treatment of molds and metal parts. Our factory covers an area of 6000 square meters. As a dynamic emerging company, we have our strong team members with professional engineering technician and staff of quality control and     production management with over 20 years experience in the heat treatment industry. We also provide our technical support hotline in 24 hour ...