1.Special surface treatment of spray painting, very smooth 2.Embedded structure ... : low resistance, less pressure, the usage range of air source is expanded, and it is suitable in the site ... where the pressure of air source is lower.Technical parameters: Connection port(G) 1'', ... (14. F--176. F)The relative humidity of air no more than 85%Diaphragm life 1 million times(5 ...