Our SHANGHAI YEATS ADDITIVE CO.,LTD.is a large lignosulphonate manufacture in CHINA. we produce large quantity lignosulphonate-series products.it can used in construction,cement &concrete additive ,ceramics additive...as water reducer,retard solidify. our main products is as folloesProductsSodium Lignosulphonate/ Calcium Lignosulphonate/ Ammonium Lignosulphonate Sodium Gluconate Synthetic Magnesium Silicate If you need these product,pls send email to me,we will give you the most competitive price and the best service.waiting for your reply!wish we can cooperation with you in nearly future!Best wishes,LILY(Ms.)