... ,North America, South-east,Asia Guangzhou Wengu Plastic Cement Co.,Ltd.The knowledge of tubesSpecifications:1.Diameter: 10, 13,14, 16, 19, 22 ... , strong airtightness ,property and tenacity, high penetration resistance.)The useful of tubes:1).D13mm tube: suitable for sample cream and giveaway2). D16mm and 19mm tubes: suitable ...