Hengyi Automation Equipment Co.,Ltd is a professional agent k, surfactant manufacturer, factory, plant and supplier, we ... including:Agent KLiquid ALiquid BAntioxidant LiquidBase coatTop coatCrosslinking AgentAgent K is SurfactantElement: tin dichloride, chlorhydric acid, water, ... pure stainless steel , glass or plastic are available, it’s normal if mixed liquid become yellow, Shelf life: 7days ...