Water Color Pen 1)Non-toxic and environmental friendly 2)Standards: EN71 & ASTM D-4236 3)Welcome customers' logos Water colour pen, water colour marker, water marker ... d-4236 & en71.2, Smooth drawing, quick drying , stable and fresh colour , easy colouring.3, Can be used on paper ... - different colours for your choose freely,.5, main ingredient - water-based dye-based pigment, fiber tip, PP made of.6 ...