According to the current domestic production situation, you need to see what sodium gluconate is used for. Now sodium gluconate is mainly divided into several levels, including pharmaceutical grade, food grade and industrial grade. If you are used in food and medicine, it is recommended that you use the products of Qingdao Kehai Bio and Shandong Kaixiang Bio-chemical, because other manufacturers basically do not make food-grade and pharmaceutical-grade products. If you use it in concrete, there won't be too many problems. Biofermented products such as Qingdao Kehai Bio, Shandong Kaixiang, Shandong Xiwang and Dezhou Fuyang can meet the requirements.