Qingdao Tianya Chemical Co., Ltd is the leading manufacturer of Sodium Metabisulfite (SMBS) in China, we produce and supply excellent quality Sodium Metabisulfite Food Grade, Sodium Metabisulfite Industrial Grade (Technical Grade) products, and other a range of water treatment chemicals, including Sodium Bicarbonate, Polyaluminium Chloride (PAC) and Caustic Soda (Sodium Hydroxide), etc.. Our factory is located in Weifang of China, China’s biggest sea salt, soda ash, bromine, and refinery bases, and Asia’s biggest chlor-alkali base, which owns comprehensive chemical product production chain. Tianya Chemical owns an independent product R&D team, provides technical support for the company products development, which maintains the latest product production processes, and keep the company at the leading position of the industry.