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Experts advise farmers and friends, some wide-eyed when purchasing fertilizers. To the regular sales units, medium and large enterprises to buy high-p...>
According to the different tracer C, C-urea breath test can be divided into two kinds, 13C-urea breath test and 14C-urea breath test.
Urea Chemical Formula: CO (NH2) 2 high-nitrogen urea nitrogen content of the active ingredient of nitrogen
In addition to these three state trading enterprises, the government also imported urea from Jin Coal Sun Stone, which is a joint project with the off...>