1.Optimization of production can be realized by using the improved ethanediol solvent extraction process.
采用改进的乙二醇类溶剂抽提流程，可以达到优化生产的目的。
2.WZ405 coolant detector is used to simply measure the density and freezing point of ethylene and ethanediol in antifreezing fluid or coolant.
用来简易的测量防冻液或冷却剂中乙烯、乙二醇浓度及其冰点。