China Zhejiang Sanmen Herod Mattress Co.,Ltd. locates at the southeast of China, it is only one and half hour's drive from Ningbo airport and Hangzhou airport, very convenience at the transport and shipment. We specialized in making various of springs, coil spring for above 8 years, our main products, coil springs is bonnell spring, serpentine spring for mattress and sofa usages, compression spring, extension spring, torsional spring, leaf spring, coil spring and other kinds of springs for automobile, machine, artcraft and other usages. Because of skilled workers, advanced equipments, strict management, our products, coil springs, lift coil spring, lowering coil spring, heavy duty coil spring, custom coil spring, cutting coil spring, cut coil spring, broken coil spring, suspension coil spring, replacement coil spring, replace coil spring, replacing coil spring, small coil spring, performance coil spring, precision coil spring, drop coil spring, cargo coil spring, blue coil spring, pocketed coil spring, garage door coil spring, adjustable coil spring, helical coil spring, variable rate coil spring, canted coil spring are of high quality and they are warmly welcomed by our customers from domestic and abroad of China.