... 1.manufacturer,20years in this field 2.support OEM 3.certification:ISO9001,ISO14001 2.5-16.0MM LOW PRICE HDPE ... and the water absorption rate is very low, about 0.2kg / m2.3.anti-corrosion, good insulation performance, ... of water and oil, service life is up to 50 years, three or four times more than ... business many years ,so any request, feel free to contact with me, i will reply you soonest and ...