History
Tianjin Changlong has been producing gas equipment for more than 30 years, under the care of leaders at all levels of the gas industry, the strong support of new and old customers, and the active and continuous innovation of technical personnel, it has successfully developed a number of new products that fill the gaps in domestic and foreign technology., And obtained a number of invention patents and national key new products, has been widely recognized and praised by domestic and foreign gas industry counterparts.
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1988
Independent design and development of the first liquefied petroleum gas filling equipment.
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1992
LPG filling equipment has been rated as a national new product by five major ministries.
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1994
Designated by the Ministry of Construction as a fixed-point production unit of liquefied petroleum gas filling equipment.
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1997
For seven consecutive years, it has hosted industry exchange meetings and new product launches sponsored by the Ministry of Construction and China City Gas Association.
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2000
The product is upgraded from a mechanical turntable to an electronic filling turntable.
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2005
Realize full automatic filling of straight valve electronic filling turntable and semi-automatic filling of angle valve electronic filling turntable.
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2009
Successful development of telescopic conveyor.
Successfully developed fully automatic cylinder code bottle machine.
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2013
Development of the first refrigerant filling scale.
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2015
The research and development of the residual gas recovery system of the liquefied gas filling carousel is a major breakthrough in the liquefied gas industry at home and abroad.
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2016
Successfully developed fully automatic cylinder water pressure testing equipment.
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2021
Research and development of liquefied gas automatic leak detector.
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2022
Successfully developed fully automatic refrigerant filling production line.
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2023
Successfully developed seamless bottle, aluminum bottle water pressure testing equipment.
Hotline:+86 022-86825773
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E-mail：tianjinchanglong@126.com
Factory Director's Office:+86 022-86827988
Technical Section:+86 022-86825038