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Guangzhou Tel: 020-81762527, 81012789,
81272884, 81752336
Fax: 020-81764254, 81752439
Company website: http://www.cnyongyin168.com.cn
Email, Guangzhou: gzyonglong168@126.com
Hubei hbyonglong@163.com
Headquarters address: No. 16, Tan tail Road, Liwan District bridge, Guangzhou, China
Hubei address: No. 50 Hubei road Zhongxiang xinmeixiang |
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| Patent technology |
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| Welding nail patent certificate |
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| Detailed information： |
此為國內(nèi)最早的焊釘專利證書，標(biāo)志著我國能用自己的設(shè)備自己的技術(shù)生產(chǎn)合格的焊釘了。對當(dāng)時(shí)國內(nèi)幕墻行業(yè)成本的降低有一定貢獻(xiàn)。 |
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