South tongdong heavy machinebed co. Ltd. Is a modern enterprise that combines r & d, production, sales-rollers, shearers, folding machines. Its main products are rollers, triple rollers, number control boarders, four rollers, hydraulic rollers, hydraulic clipboard clipper clipperers; equipment structure is compact, high accuracy, environmentally efficient and stable; and products are broadly applicable to metallurgy, aircraft, vehicles, ships, packaging instruments, stainless steel products, and so on。