Primer Surfacer/car paint/auto paint MAX-3450 1K Primer Surfacer Surstrates: Dried and sanded existing finishes and putty Surface Cleaning: Remove wax, grease or other contaminations with degreaser. Mixing Ratio: MAX-3450 1K Primer Surfacer:M-1 Thinner=1:0.8-1.0 No.of Coats: 2-3 coats,total 30-50um Flash-off time: 5-10 minutes at 25°C Spray Guns & Pressure Gravity Feed 1.4-1.6mm 3-5kg/cm2 Siphon Feed 1.7-1.8mm 3-5kg/cm2 Dry Time: 30 minutes at 25°C Sanding: Dry sanding with P400-P600 or wet sanding with P800-P1000. Re-coat: After drying and sanding, re-coat with all kinds of topcoat Shelf Life: 2 years in original sealed can at cool and dry place at 20°C Packaging: 4kg Note: 1. Not suitable for direct application over bare metals & wood. 2. It is recommended for spot repair but not for large area application. 3. It is recommended to use 2K primer surfacer to achieve good adhesion and strong corrosion resistance.