Mechanical rack, namely, mechanical and hydraulic lifts; die-cutting and metal processing hole tapping machines; precision machining equipment, namely, computer numerical control (CNC) machines for milling, drilling, cutting, 3D carving and laser; machine tool for compacting powder materials, crushing rock; metal working machinery, namely, milling machines for metalworking; machine tool chuck, namely, clamps for use in the precision clamping of work pieces; electric polishing machines and equ...