Provide better solutions for customer,creat more value for society,won more wealth for
Develop more customers。
Make products more competitive .
Improve process and service.
Innovation is foundation in Longen.Only innovated product and process can we have a bet
-ter tomorrow in air leak testing industry.
Longen put high standard on quality control.We require carefully working on inspection.We
can not tolerate defected products in Longen.
Our mission is helping customer solve their problems。We never be a sales but a good friend
to all of our customers.