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Coverage: the area per unit weight of a powder coating that can be sprayed
Specific gravity(g/cm3); Coating thickness(μm); Coverage rate(m2/kg)
Calculation formula: 1000 / (Specific gravity X coating thickness) = coverage
The loss of powder in the equipment during spraying
Non recyclable over sprayed powder
The surface film of spraying workpiece is different in thickness
The surface roughness of workpiece is different