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Companyprofile

Longen (Tianjin)Leak -Testing technology Co。,ltd is a manufacturer for quick connectors /air leak testing machines and wire harness for testing。We provide solutions for auto engine assembly leak testing/auto parts leak testing and many other industries leak testing 。Longen have provided leak testing solutions for many auto brands like Volvo/Mercedes Benz/Land Rover /FIAT /Ford and many other brand。。。

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