bounding evaporator for freezers

The index of cleanliness of non-CFC refrigerating medium:Residual moisture≤20mg/m2 ,residual impurities≤30mg/m2 ,residual mine oil≤7mg/m2,cholorineion≤0.3mg/m2 ,paraffin≤0.2mg/m2. Quality indexes of coating: 1.Thickness of coating:flat plate powder spraying:60-80um; 2.Anti impact of coating:50kg/cm, no crack and no failing off; 3.hardess of coating:≥2H 4.Binding force:reach to 1st standard;(space rowing method) 5.Luster: ≥86% 6.Toughness:wind it aroud 3D core wheel shaft, no crack and no falling off; 7.Corrosion resistant:HG/T2006-91,GB/T1771-91,power spraying and painting 400 hours, no rustiness.