... strength and abrasion resistant. Qingdao Shitong Rubber&Plastic Products Co., Ltd. is a professional inner tube manufacturer and exporter, and including ... our productions ,just contact with us! While sending the offer to me,kindly detailed specification,Such as:Size,Tyre layer or Weight ... will quote you at best net price for ASAP.Welcome to our factory in any time,(jiaonan)qingdao,China ...