Sodium Metabisulfite Price Reference Price Sodium Metabisulfite Food Grade, US$ 220-280/ton FOB Qingdao, China. Loading Quantity MAX: 27 tons / 20’FCL Packaging 25 kg/bag, 1000 kg/bag, Customized as requset. Reference Price Sodium Metabisulfite Industrial Grade, US$ 200-260/ton FOB Qingdao, China. Loading Quantity MAX: 27 tons / 20’FCL Packaging 25 kg/bag, 1000 kg/bag, Customized as requset. Reference Price Anhydrous Sodium Sulfite, US$ 350-420/ton FOB Qingdao, China. Loading Quantity MAX: 27 tons / 20’FCL Packaging 25 kg/bag, 1000 kg/bag, Customized as requset.