As an ISO 9001:2008 certified firm Shandong Wanshan Chemical Co., Ltd is the largest manufacturer of a kind of concrete admixture: SNF (Sodium naphthalene formaldehyde powder) in China, and we are subsidiary of SHANDONG WANSHAN GROUP CO., LTD. Our production capacity reaches 900,000 MTs/year. Sodium Gluconate can also used as concrete admixture, steel surface cleaning agent, special cleaning agent of glass bottle and etc,is produced by our another subsidiary--Weifang Jianbao Biotechnology co.