... 1.IG materail from Korea 2.Butt welding PE AL PE 3.AENOR,WATERMARK,EME,ISO9001 1.We insist on using ... 2.With WATERMARK,AENOR,EME,ISO certificates verify,PEX AL PEX pipe is widely used for underfloor heating. ... TÜV and WRAS are also under applying.3.The goods must be strictly tested before delivery, ... perfect quality control management system.4.Butt-welded PE AL PE pipe is made of 5layers,both inner ...