... PHPA :ISO-9001 2.Made in china 3.Oil drilling chemicals & waste water treatment flocculant. PHPAPolyacrylamideMade in china Oil ... agent, viscosifier, shale stabilizer, encapsulating agent and flocculant. This product is functional in fresh water, seawater, KCI brine, and ... effective in both low and high pH drilling fluid systems.Product Advantages - A versative multi-functional additive for most ...