Refined Primary Brine is an environment-friendly product pioneered by Kintan Salt, which is an emerging product developed and produced in response to the requirements of chlor-alkali enterprises for the quality of brine in ion membrane electrolyzer. Instead of refined wet salt, the usage of 1 ton of refined primary brine implicates the saving of 100 kg of standard coal. Nowadays, with our efforts, the production of sodium carbonate with full bittern is gradually becoming a new trend in the chlor-alkali industry.