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Tartaric acid and sodium gluconate are quite popular set retarders for cement mortar or concrete, and gypsum as well. Industrial grade of products are quite suitable for use in construction applications.
retarding additive for cement,sodium gluconate,industrial grade tartaric acid, grinded fine tartaric acid,efficient set retarder for self-leveling
Shanghai Na Long Tech Co., Ltd , https://www.na-long.com