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Zhejiang Kingland Pipeline and Technologies Co.,Ltd.
International Trading Department:
Address:Room 703, Block A, Huanqiu Guangchang, No. 18, Taolin Road, Pudong, Shanghai
Post Code:200135
Email: enquiry@chinakingland.com
Website: http://En.chinakingland.com
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| CNOOC honored invention patent of“a kind of manufacturing method of N80 oil well casing pipe” |
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| Addtime:
2012/09/22
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| In June.27th,2012,CNOOC honored patent certificate of “a kind of manufacturing method of N80 oil well casing pipe” which was issued by State Intellectual Property Office of P.R.C, patent NO. was: ZL 2009 1 0157143.2. |
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