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经营范围
发明名称
ETHYLENE PRODUCTION
摘要
申请公布号
GB9118951(D0)
申请公布日期
1991.10.23
申请号
GB19910018951
申请日期
1991.09.05
申请人
H&G PROCESS CONTRACTING LTD.
发明人
分类号
主分类号
代理机构
代理人
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