0-852-24671765
No. 11, 7/F, Tower A2, Hang Wai Ind. Ctr., No. 114, Kin Wing St., N.T., Hong Kong
Non-toxic school blackboard teaching dustless rainbow color chalk, US $ 0.04 - 0.07 / Piece, YES, COLOR, Any, 24mm (dia) x 88mm (L).Source from HANG KEI STATIONERY COMPANY LIMITED on Waimaotong.com.