Manufactured with the cross-linked polyethylene, RIFENG PEX pipes boost more elaborated polyethylene performances without losing the excellent properties of thermoplastics, the company explains. Offering excellent corrosion resistance, incredible flexibility and unusual toughness, RIFENG’s PEX pipes allow for the fastest and easiest pipe installations, it adds.WWW.RIFENG.COM/PRODUCT/PEX-PLUMBING-SYSTEM.HTML