Zibo Goldstar Spring Factory is a specialized factory producing various elastic products which was established in 1983 and has a 7000 workshop currently.We mainly produce vehicle suspension spring,engine valve spring,all kinds of machinery springs and various special series springs,etc.We have advanced production machineries which makes all springs can be made in our factory when wire diameter is between 0.3mm and 50mm.According to the requirement of our ISO/TS 16949 certifications,quality control is very important.Our testing equipment makes us do testing strictly and guarantee springs are qualified.Advanced production technology helps us produce high quality products step by step.Meanwhile,continuous improvement of management helps us keep long term relationship with all customers.Hopefully our high quality ,low-price products and high-efficiency service help you to be more competitive.