1, PPR and aluminium material; 2, Different size and colors available; 3, High quality; 4, CE, ISO 9001 and PICC are approved 1, Size: φ20, 25, 32, 40, 50, 63mm;2, PPR and aluminium material;3, High temperature and pressure resistance;4, Healthful, environment-friendly;5, Heat preservation and energy saving; 6, Trustable quality and good after-sale service;7, Competitive price;8, OEM is ...