Features of EVOH Pipe Set 1) It adopts barrel and screw specially designed in accordance with property of EVOH resin. 2) Specially designed co-extrusion die head makes an even and organic combination of EVOH resin, adhesive and pipe base. 3) EVOH Composite Anti-Oxygen Permeated Pipe has many advantages such as excellent non-permeability and scent preservation, good anti-ultraviolet ray and other radiations, enlarging the pipe's lifespan for anti-aging and effectively avoiding breeding of germ in the inside wallof pipe. 4) Three-layer and five-layer co-extrusion composite anti-oxygen permeated pipe set has the following models, PP-R/EVOH,PB-EVOH,PE-RT/EVOH,PE-Xa/EVOH,PE-Xb/EVOH AND PE/EVOH.