Shandong Deshunyuan Petro Sci & Tech Co., Ltd., established in Dongying, Shandong, China in 1999, is a high-tech enterprise which is dedicated to providing petroleum engineering services. We were reformed from Dongying Luyuan Trading Co., Ltd. and Shandong Wode Petro Sci & Tech Co., Ltd. Our main business covers drilling engineering service, drilling fluids service, harmless disposal technology service of drilling/production waste, the R&D and service of chemicals for oilfields, the ...   |