NH4Cl、(NH4)2SO4, as you know, in China, environment protection is the most important thing, for example, the chinese government ask and supervise all kinds of chemical factories,which have all of kinds of by-product of ammonium,  to collect and deal with these kinds of  products containing ammonium, no outward discharge is allowed, therefore, these chemical factories have to design new production equipment for producing ammonium chloride, ammonium sulphate, etc.,


BaCO3, barium carbonate, China is a country rich in barium salt, widely used in production of barium salt, dyes, pyrotechnics, ceramics, enamel, optical glass, pesticide for rat, etc.,

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