途游斗地主

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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.
ISO9001
ISO9001

途游斗地主Jiangsu Lianhong With the latest technology and strict management, company has passed the People's Republic of China ISO9001 certification. Certificate No :10117Q11453ROS

Patent 1
Patent 1

In 2015, the company with the latest technology, the development of a titanium alloy head, In August 2016, passed the authorization of the State Intellectual Property Office of the People's Republic of China, and in February 2017, has obtained the Patent Certificate. Certificate No. : 5416331, Patent Number: ZL2015 2 1075017. X.

Patent 2
Patent 2

In 2017, in order to improve the process and produce more accurately,Lianhong company developed an adjustable steel tube rust removal 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. : 7176832, Patent No. : ZL 2017 2 1131428.5.

Patent 3
Patent 3

途游斗地主In 2017, in order to improve the working efficiency and more accurate production, Lianghong company developed a stamping device that is convenient for mold release . In April 2018, its obtained the Patent Certificate issued by the State Intellectual Property Office of the People's Republic of China. Certificate No. : 7176831, Patent No. : ZL 2017 2 1131944.8.

Patent 4
Patent 4

途游斗地主In 2017, Lianhong company has been continuously studying and developing a new type of oil storage container tank. In April 2018, its obtained the Patent Certificate issued by the State Intellectual Property Office of the People's Republic of China. Certificate No. : 7175855, Patent No. : ZL 2017 2 1186679.3.

Patent 5
Patent 5

In 2017, the company after years of persistence and efforts, finally developed a device with a cool storage tanks, In April 2018, its obtained the Patent Certificate issued by the State Intellectual Property office of the People's Republic of China, Certificate No. : 7176237, Patent number: ZL 2017 2 1131118.3.

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