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, leaf spring for above 8 years, our main products, leaf springs is bonnell spring, serpentine spring for mattress and sofa usages, compression spring, extension spring, torsional spring, leaf spring, leaf spring and other kinds of springs for automobile, machine, artcraft and other usages. Because of skilled workers, advanced equipments, strict management, our products, leaf springs, rear leaf spring, trailer leaf spring, truck leaf spring, custom leaf spring, lift leaf spring, lowering leaf spring, composite leaf spring, heavy duty leaf spring, posterior leaf spring, front leaf spring, transverse leaf spring, fiberglass leaf spring, boat trailer leaf spring, drop leaf spring, parabolic leaf spring, automotive leaf spring, car leaf spring, suspension leaf spring, auto leaf spring, lowered leaf spring, single leaf spring, lower leaf spring are of high quality and they are warmly welcomed by our customers from domestic and abroad of China.