Rui Desheng chemicals, food additives [export] sodium metabisulfite, sodium metabisulfite provided by 瑞德胜 chemical. We are Weifang Rui Desheng Chemical Co., Ltd. (www.ruidesheng.com) located at: Shandong Weifang specializes in: sodium sulfate, sodium metabisulfite, deicing salt, calcium chloride, sodium bicarbonate, sodium metabisulfite is mainly to prevent sea shrimp fat Black deterioration, chilled seafood commonly used chemical reducing agent, sodium metabisulfite after fishermen fishing, often transported on board fishing vessels, or added directly to the manufacturers of food grade sodium metabisulfite, and more general use in summer, spring and autumn use less winter basically not used. In aquaculture in sodium metabisulfite is decomposed into sulfur dioxide, sulfur dioxide, sulfurous water generated Shandong metabisulfite, sulfite with reducing food additive sodium metabisulfite exports, with its effective control of aquatic browning, microbial physiology to block the oxidation process, inhibiting reproduction inhibit oxidative activity and food chromophore, and show its bleaching, bleaching, antiseptic and antioxidant effects. What is the role of sodium metabisulfite in concrete; concrete added sulfate is mainly played the role of early strength. However, dosage should not exceed 0.1% -0.3%. If you add excessive late strength of concrete will be affected.