POLYEM HW alcohol-ether carboxylic acid is a surfactant that insets polyoxyethylene groups between hydrophilic and hydrophobic groups. It has the advantages of both anionic and non-ionic surfactant, overcomes the shortcomings of bad hard water resistance and bad dispersing ability of non-ionic surfactant calcium soap, and has excellent electrolyte stability in acid-base environment. It can be used as coemulsifier in cutting fluid. Solve the problem of oil and soap extraction. POLYEM HW series is a series of alcohol-ether-carboxylic acid surfactants with excellent resistance to hard water and dispersion of calcium soap. It also disperses the sludge formed by magnesium and copper ions. It is suitable for metal processing in areas with high water hardness and leads to increasing hardness. POLYEM HW系列产品能与任何离子型表面活性剂配伍，尤其对阳离子的调理性能没有干扰，另外具有卓越的增溶性能，适于配制功能性透明产品。