... Quality and Efficiency Good instruction 2,Large frame for 3.2 m in height, 16# steel ... above use 10# steel racks 4,Active wheel for four wheels, the diameter is 1.1meter, 1.8cm ... cost, flexible operation, reliable quality. Product is suitable for complex terrain around the country, narrow or wide ... s worries.We take "quality first, customer first" for the purpose " to produce 100% qualified products, 100 ...