No.228,Nanyi Road

Dongying Kangyu Petroleum Engineering Technology Service Co.,Ltd located in the Yellow river delta city-Dongying City, the base of the second largest oilfield in China, Shengli Oilfield. The company&a...

Room 2302, No 729 Pujian Road, Pudong,

ZENT is a innovative export-oriented company, which rely mainly on R&D and production in china, that marketing center is in Shanghai and manufacture base are in Jiading,Jinshan and Jiangyin ci...