‧ The roller coater is designed for coating backside of workpiece. ‧ Air operated dual diaphragm pump features no sparking , is safe , and has no air pollution problem. ‧ Conveyor belt speed is adjustable in the range of 10~20 M/min. ‧ Easy to operate. The operator only needs to place workpieces on the conveyor belt without the need of an experienced technican.