1)Non-toxic and environmental friendly 2)Standards: EN71 & ASTM D-4236 3)Welcome customers' logos Water colour pen, water colour marker, water marker available with following details:1, Non-toxic, no irritating smell, health, conforms ASTM d-4236 & en71.2, Smooth drawing, quick drying , stable and fresh colour , easy colouring.3, Can be used on paper, card-board, canvas, etc.4, Colours - ...