D.T.C. Industries Public Co., Ltd. engages in the production and distribution of pen and pen-related products. Its products include ball point pens, eraser, fine liner, hi-liter, lead dart pencil refill, markers, metal pen, retractable pencil, roller pen, stamp pads, endorsing ink and wax crayon. The company was founded by Por Anavil and Julian Deeley in 1963 and is headquartered in Bangkok, Thailand.