1. 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.
2. Quality indexes of coating;
3. Aondic oxidizes: Matching the form of aluminum starch experimuents;
4. Electrophoresis coating: 12-25m;
5. Chemistry eau douce: True colors;
6. Lmmerse varnish: 12-30m
7. Corrosion resistant(GB2423): Electrophoresis≥200h, no rustiness; Lmmersed varnish≥96h, no rustiness.