Casters manufacturers specified design position must be installed. Caster bracket must be of sufficient strength rubber caster 80, to comply with bearing the weight when used. Turn movement must always be vertical axle. Fujian factory production Wheels within Wheels Wheels _ _ hexagonal positive Tong Machinery (certified merchants) are provided by Ning County is Tong Machinery Plastic Co., Ltd. Ning County is Tong Machinery Plastic Co., Ltd. (www.dzztjx.com) in plastic that area devoted boundless enthusiasm and passion, positive Tong machinery has been customer-centric, the concept of creating value for customers, quality, service to win the market, and sincerely hope to cooperate with the community to create success, to create brilliant. Related businesses welcome inquiries, contact: song manager.