Hebei Yanshan Chemical Products Co.,Ltd is a comprehensive manufacturer, it consist of five factory and one foreign trade company , our business focus on chemical raw materials , such as formic acid , oxalic acid , pentaerythritol , ferric oxide , chrome yellow , chrome oxide green ,lithopone ,calcium chloride ,glacial acetic acid ,rubber antioxidant , rubber accelerator , titanium dioxide , sodium hexametaphosphate ,zinc oxide ,etc ,More information about our company and products or further enquiry ,please feel free to contact us !