for the usage of the basical chemical industry ,paper , agriculture, leather and so on ,pls contact the mail : sinon golia-chem AT 163 DOT COM.For more infors and looking forwar d the cooperation with you in the near future! we can supply sodium sulphide sodium sulphide Here are brief introduction of our company: SINO CHEM MONGOLIA ALLIANCE,a china chemistry enterprises, w hich own the local advantage (23686656)of Inner Mongolia an d the advaced technology. products: calcium carbide,sodium s ulfate,sodium sulfite,(23686656)sodium metabisulphide,sodiu m sulphide sodium hydrosulphide,dicyandiamide,(23686656)alum inum sulfate,magnic sulfate,etc Pls email us:sinongolia-che m AT 163 DOTcom,and web .Looking the cooperati on with you.