低密度聚乙烯产品被评为北京市名牌产品。

LDPE has been awarded as Beijing Famous Product.

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护套：黑色低密度或中密度或高密度聚乙烯。

Jacket: Black low mid or high density polyethylene.

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护套：黑色低密度或中密度或高密度聚乙烯。

Jacket: Black low mid or high density polyethylene.

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