Which cpvc tube manufacturer is better?

1. Yantai jinwoquan plastic co., ltd. main products: PVC pipes and valves; PVC pipes and fittings; PE coffin, CPVC power tube, PE threading tube, etc. Address: Yonghe Road 12 12, Fuxin Industrial Park, Yantai, Shandong, China. Shanwei Honghaiwan Yaodong Plastic Hardware Products Co., Ltd. Main products: PVC pipes and fittings for drainage/water supply; Hardware, electrical and electronic communication products; Plastic pipe; Home power switch socket address: Qianwei 3, Nanlian Road, Tianjie, Honghaiwan, Shanwei City. Qingdao Zhenggang Rubber & Plastic Machinery Co., Ltd. Main products: plastic machinery; Plastic pipe equipment; Plastic plate equipment; Wood-plastic profile equipment; Foaming board equipment; Foam pipe equipment; Door and window profile equipment; PVC pipe fitting address: 4. China Qingdao jiaozhou city Ducun Town Zhuzhu South Road Qingdao Jinruite Plastic Machinery Co., Ltd. Main products: plastic pipe, plate and sheet processing equipment, pe plastic-steel winding pipe equipment, pvc skin foamed wood-plastic foamed plate equipment, wood-plastic profile equipment. Address: Qingdao jiaozhou city Jiaoxi Industrial Park. 5. Beijing Ruifeng Biyuan Building Materials Co., Ltd. Main products: pvc drainage pipe, pvc water supply pipe, floor heating pipe, pb pipe and jdg pipe. Address: Room 906, Building 1, Jiayue Plaza, Xihongmen Town, Daxing District, Beijing.