Hengshui Zehao Chemicals Co., Ltd. mainly supply various grade Gum Rosin, Coal tar, Coal Tar Pitch, Antioxidant RD, Paraffin Wax etc
Antioxidant RD Mainly used in manufacture of tires, rubber shoes and other rubber products and so on. if you are interest in our products you can contact me by e-mail, sales (at) hszehao (dot)com