Mix Ratio (By volume)2K Primer Surfacer(UN-8201,UN-8203,UN-8204): 5 partsPrimer surfacer (UN-8202):1 partThinner(UN-6001,UN-6002,UN-6003):1 part*Choose the materials according to the temperature.Pot life2hours@20degrees centigradeSpray gun & air pressureGravity type1.21.5mm, 4PaSuction type1.41.6mm Spray 3050μmSpray method2-3 single coating to coverage (volatilization time of each layer:5 to 10 minutes)Drying Time3hours@20degrees centigrade30minutes@60degrees centigradeSandingBefore sprayP180P400 by dry sandingAfter sprayP800P1000 by wet sandingSubstrateOEM paint,steel surface,Fiber Reinforced Plastics,surface of putty.Unapplicable Substrategalvanized steel, stainless steelPackaging5kgx 4 tins/ctnShelf life5 years