This company integrates "development, manufacture and distribution" which specializes in manufacturing rubber protect eraser material, erasable plastic crayon material, eraser, pencil, rubber and plastic hull, and erasable plastic crayon and color core. Rubber protect eraser is nontoxic, no damage to paper and leaves no dirt. The product index is accord with Europe EN-71 and America ASTM-F963 ASTM-D4236 standard.