Product Coverage:

The new machine supporting products: passenger cars (gasoline, diesel, gas), commercial heavy truck, light truck engine (diesel SCR, gas DOC), engineering machinery, ships, agricultural machinery engine.

After the car service market products: three catalytic converter repair agent, three catalytic converter, renewable black smoke catalytic converter.

Industrial products: generator (diesel, gas), industrial kiln, waste incineration (dioxin) emissions of catalytic purification processor.

Into the World of HUIHUANG LANGJIE

Our mission is offer quality technological soluctions to our customers related to the exhaust gas
emission by means of ongoing improvement of our products, of our physical resources, and of our team.

Join Us!

Focus on the engine after-treatment catalyst and catalytic converter research and development, production ,sales , acquired 33 patents , have build up a research and development base , attend the national key Torch Program projects and national “863” project .

We’re always looking for exceptional individuals who share our commitment to bringing positive transformation to the world around us.

If you’re ready to use your knowledge, talent, and ideas to make an impact, we’re ready to meet you.

Latest News & Events From Huihuang

Holiday Breaks, Mid-Autumn Festival & National Day

Mid-Autumn Festival arriving in China along with National…

Langjie Euro IV Catalyst Converter with Muffler Mass Production for Yuchai Bus

Huihuang Langjie started cooperation with Yuchai Group since…

Air pollution more than half of environmental complaints in China

BEIJING -- The Ministry of Environmental Protection (MEP) received information from more than 88,000 members of the public about pollution in the first quarter of 2017, with air...

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