... oil field, paper-making, textile, dyeing, petrochemical industry, tanning industry, metallurgical industry and building material industry, it is mainly ... as a water softening agent in solution for printing, dyeing, and boiler; Diffusing in papermaking; slow corrodent, floating agent, ... used as additive agent, PH adjusting agent and fermentation agent, and nourishment. Packing: 25kgs net paper bags or ...