Use of natural gas for heat chlorination methylene chloride for the production of photographic materials for industrial solvent.
采用天然气热氯化法生产二氯甲烷以供感光材料工业作溶剂。
Use of natural gas for heat chlorination methylene chloride for the production of photographic materials for industrial solvent.
采用天然气热氯化法生产二氯甲烷以供感光材料工业作溶剂。
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