1. Rectangular Q235A  tube  120 x 60 x 3.0mm. 2. Seat is made of one-step moulded PU foam, covered with high-quality grain synthetic leather. 3. Precision-machine  steel parts  by CNC laser-beam cutting machine. 4. Precise rubber and plastic parts. 5. Durable axis, sleeve, bearing,  and  typical nylon driven pulley. 6. Well-designed  strength-transmission rope sheave , made of nylon, by which steel cable haul weight stack.Air cushion film firstly and then package it with thick plywood case, In 20GP, 40GP, 40HQ.Technical guidance Life-long sales service and spare parts ooffered Quality guarantee Sole-agent agreement or zone distributor Assemble and maintance training