You would be delighted to know that since 1960 we have been one of the main importers of raw materials for plastic and petrochemical manufacturers. Now we are interested in the following items.
想必贵公司当欣于知道,自从1960年以来,本公司即为塑料和石油化学物品制造商的原料主要进口商。
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Many of the raw materials used in the petrochemical industry are unsaturated hydrocarbons, such as ethylene, propylene, butene and butadiene.