various kinds of compressing spiral spring, extension spring, torsion spring, calipers spring, central-raised spring, drum spring, pagoda spring, recantation spring, unique distance spring, square snail roller spiral power spring, window cracker spring, huge steel spring, plate spring, diaphragm spring, wavy spring, round spring, mold spring, square spring, flat spring. It also produces high-pressure springs, suspension springs for various automobiles and mini-automobiles, front and back damper spring for motor bicycles, brake springs for camions. The specifications of steel material diversify from 0.2 to 75 mn. They use recantation steel, flat steel, all kinds of stainless steel and Sn-Bronze as the raw material.