1. Through the PAHs,msds, preservative,cd,pb,AZO,EN71-9,EN71-3,BTX authentication 2. Cheaper price, quality is better Acrylic color1, Ensure competitive price, good quality.2, Popular packing design, professional service.3, Brilliant color, speed dry, color full, strong adhesive power,...4. Can be used on canvas,metal and cardboard.