... RO system, DI water 2.Solvents, selected acids&lyes, chemical industry 3.FOOD and beverage, drinking water PP ... or RO system, DI waterB. Solvents, selected acids&lyes, chemical industryC. Semiconductor, Eletronic industry ultrapure water systemD. ... FOOD and beverage, drinking water treatmentE. Oil industryMaterial of constructionA. ...