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Our main customers involve Liaoning Branch of China Petroleum and Natural Gas Co., Ltd., Yunnan Sales Branch of PetroChina Chemical Co., Ltd.
Patent 6
Patent 6

In 2017, Lianhong developed a new type of Anti-Dumping Pressure Vessel with the aim of putting customer experience first.In April 2018, Its obtained the Patent Certificate issued by the State Intellectual Property Office of the People's Republic of China. Certificate No. : 7176247, Patent No. : ZL 2017 2 1131943.3.

Patent 7
Patent 7

In 2017, Lianhong improved its technology and developed a new type of reaction pressure vessel again. In April 2018, Its obtained the Patent Certificate issued by the State Intellectual Property office of the People's Republic of China. Certificate No. : 7175887, Patent No. : ZL 2017 2 1131942.9

Patent 8
Patent 8

In 2017, Lianhong company made continuous innovation and improved a reaction pressure vessel with new technology. In April 2018, Its obtained the Patent Certificate issued by the State Intellectual Property office of the People's Republic of China. Certificate No. : 7176763, Patent no. : ZL 2017 2 1131117.9.

Patent 9
Patent 9

In 2017, the company continuously study, developed a practical new type of device "the outer wall of steel pipe automatic cleaning device", in April 2018, its obtained the Patent Certificate issued by the State Intellectual Property office of the People's Republic of China. Certificate No. : 7176306, Patent No. : ZL 2017 2 1131429.X.

Patent 10
Patent 10

In 2017, Lianhong improved its technology and developed a new type of Weld grinding device. In April 2018, Its obtained the Patent Certificate issued by the State Intellectual Property office of the People's Republic of China. Certificate No. : 7175986, Patent No. : ZL 2017 2 1186678.9

Certificates1
Certificates1

Jiangsu Lianhong mentioned about has been approved as a member of Confederation of Chinese Metalforming Industry. The validity is from Jan.1st,2014 to Dec.31st,2019.