... in producing various Caustic Soda including but not limited in Caustic Soda Flakes(99%,98%,and 96%) ,Caustic Soda Solid (99%,96%), and Caustic Soda Pearl (99%), ... manganese salts ,phosphate, etc .......Below are the specification of the Caustic Soda .ComposingFlake/pearl/solid 96%Flake/pearl/solid 98%Flake/pearl ... Max.Fe2O30.01% Max.0.005% Max.0.001% Max Caustic Soda Solid 99% Factory --TOYOTA partner