新工艺的主要改进为氯化钾原料不经精制而直接碳化，从而在成本相仿的情况下提高了产品档次。
With improvement unrefined potassium chloride is directly subjected to carbonization and therefore raises the product quality with similar cost.
新工艺的主要改进为氯化钾原料不经精制而直接碳化，从而在成本相仿的情况下提高了产品档次。
With improvement unrefined potassium chloride is directly subjected to carbonization and therefore raises the product quality with similar cost.
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