... forming in the wall gap,paint is hard to go deep into the gap,so the adhesive force ... of the coating is symmetrical, but thin ,need to paint for many times, the rebound is serious, ... of the coating is symmetrical,easy to control,can reach to 30 micron meters one time,high ... compressor, bad maneuverability,low efficiency easy to carry the quipment,easy to clear,low polluteenvironmentno flyoff,but have ...