2020
2019
2018
2017
2016

-2020*

*

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5 Elem Hi-Tech Corporation China
Aciselsan Acipayam Seluloz Sanayi Ve Ticaret AS Turkey
AMICO GAS POWER CO., LTD. China
Anhui Jucheng Fine Chemicals Co., Ltd. China
ANHUI TIANRUN Chemicals Co., Ltd. China
ANPING GUANGMING METAL PRODUCTS CO.,LTD China
ANPING SHENGJIA HARDWARE MESH CO., LTD / CHINA
Armano Messtechnik GmbH Germany
ARTVIK, INC / UNITED STATES OF AMERICA
ATRISAU Applied Technology Research Institute China
Baoji Baohao Petroleum Machinery Equipment Co., Ltd. China
BEIJING FJR OPTO-ELECTRONIC TECH.Co.,LTD China
BEIJING POWER INTERNATIONAL EXHIBITION CO., LTD (BEIJING) / CHINA
Borsig GmbH Germany
CANGZHOU LONGTAIDI PIPE TECHNOLOGY CO., LTD. China
Cangzhou Ruitai Petroleum Machinery Co., Ltd. China
Changsha Taihe Electronic Equipm. Co.Ltd China
Chengdu Chenggao Valve Co., Ltd. China
Chengdu Minjang Precision Cutting Tool Co., Ltd. China
China Electronics Technology Group Corporation China
China Innovation Petroleum Union Exhibition(CIPUE) China
China Petroleum Technology & Development Corporation (CPTDC) China
CN-OILSNAB CO.,LTD China
CNPC HUABEI PETROLEUM FEIDA CO., LTD. China
CNPC Logging Company Limited Germany/China
ContiTech Rubber Industrial Ltd. Hungary
CRRC Yongji Electric Co., Ltd. China
Dalian Haixin Chemical Co., Ltd. China
DEZHOUBORUPETROLEUMMACHINERYCO.,LTD China
DezhouUnitedPetroleum Technology Co., Ltd. China
DHG Enterprise Service GbR Germany
DRAEGER / GERMANY
DRILLTECH MANUFACTURING CO.,LTD. China
Dtaic Pipeline Inspection Equipment (Suzhou) Co., Ltd China
Enotec GmbH Germany
Every Industry LLC USA
EVETRON / RUSSIAN FEDERATION
Evonik Nutrition & Care GmbH Germany
Flow Technologies Trade Fairs Germany
Flüssiggas-Anlagen GmbH Germany
Fujian Kunfu Stock Co., Ltd. China
Fujian Wanlong Superhard Material Technology Co.,Ltd China
GAOYOU HUAXING PETROLEUM PIPE MANUFACTURE CO., LTD China
GMC-I Messtechnik GmbH Germany
Guanghan N & D Carbide Co., Ltd China
GUANGZHOU JST SEALS TECHNOLOGY CO.,LTD / CHINA
H. BUTTING GmbH & Co. KG Germany
Haimo Technologies Group Corp. China
Harbin aisheng intelligent technology development Co., LTD China
Hebei Boxing Petrochemical Equipment Co., Ltd. China
Hebei GN Solids Control Co., Ltd. China
HEBEI HAIHAO GROUP STEEL PIPE ENGINEERING CO., LTD China
Hebei Hengying Wire Cloth Co., Ltd. China
HEBEI JIALANG OIL DRILLING EQUIPM.Co.Ltd China
Hebei Jingbo Petroleum Machinery Co.,Ltd China
Hebei Jinsheng Pipe Fitting Manufacturing Co. Ltd China
Hebei Minhai Pipe Fitting Co., Ltd. China
Hebei Ruishi Bits Manufacturing Co., Ltd China
Hebei XinHuaFa Petroleum Mechanical Manufacturer Co., Ltd China
Henan SF DIAMOND CO.,LTD. China
Hilong Group Of Companies China
HONGHUA GROUP Co. Ltd. China
Hubei Hongyi Electronic Science & Technology Co., Ltd. China
HUBEI JIAYE PETRO-MACHINERY CORP. China
IPCO Germany GmbH Germany
JIANGSU CHANGBAO STEEL TUBE LIMITED CO. China
JIANGSU RUDONG LIANFENG PETROLEUM MACHINERY CO.,LTD. China
Jiangsu Saifu Petrol Machinery Co., Ltd. China
JIANGSU SUNKAIER INDUSTRIAL TECH.Co.,LTD China
JIANGSU TAISHUN ENERGY TECHNOLOGY DEVELOPMENT CO.,LTD China
JiangsuRushiMachineryCo.,Ltd China
JINAN KAIXIANG PETROLEUM MACHINERY EQUIPMENT CO., LTD China
JinanLongchaoPetroleum Machinery Co., Ltd China
JINANXINYUCEMENTEDCARBIDECO.,LTD China
JINING FORTUNE BIOTECH CO., LTD. China
JUMO GmbH & Co. KG Germany
KANEX Krohne Anlagen Export GmbH Germany
KERUI GROUP China
KES Energy Equipment Manufacturing Hebei China
Klaus Union GmbH&Co.KG Germany /Russia
Klöpper-Therm Vertriebs GmbH Germany
KNF Neuberger GmbH Germany
Laizhou Rising Star Artificial Lift Co. Ltd. China
Lake Petro Co., Ltd. China
Leistritz Pumpen GmbH Germany
Leobersdorfer Maschinenfabrik GmbH Austria
Lishui Ouyi Valve Co., Ltd. China
Lokring Northern UK Ltd. Great Britain
Luohe Letone Hydraulics Technology Co., Ltd. China
LUOYANG REASTAR TRANSMISSION CO.,LTD. China
Mankenberg GmbH Germany
müller quadax GmbH Germany
Munger International Petroleum Equipmet Co., Ltd. China
New Century Machinery Co., Ltd. China
NEWAY VALVE (SUZHOU) CO., LTD. China
Ningbo Chuangxing Intelligent Transmission Co., Ltd. China
NINGBO JAZZY IMP&EXP CO.,LTD. China
NINGBO OURSOLID COMPOSITE MATERIAL CO., LTD. China
NSI / BELGIUM
OLI RUSSIA / ITALY
Orient Baolin Technology Development (Beijing) Co., Ltd. China
Orient Baolin Technology Development (Beijing) Co., Ltd. China
Oviko Group Co. Ltd. China
Panjin Liaohe Oilfield Tianyi Petroleum Equipment Co., Ltd. China
Pleuger Industries GmbH Germany
Puyang sanli integrity oil Equipment Co., LTD China
PuYang ZhongYuan Restar Petroleum Equipment Co., Ltd. China
Qingdao Bitop Trading Co., Ltd. China
Qingdao Hady Industrial Co., Ltd China
Qingdao Oceanview Chemical Co., Ltd. China
QINGDAO SINGHO MACHINERY CO., LTD China
Rädlinger primus line GmbH Germany
Rays Flow Control, Inc. China
Resato International B.V. Netherlands
RG Petro Machinery Group Co., Ltd. China
Rongsheng Machinery Manufacture ltd of Huabei Oilfield, Hebei China
Rongye Group Co., Ltd. China
Sailuoke Fluid Equipment Inc. China
Samson Controls OOO Germany/Russian Fed.
Seed Technologies Corp., Ltd. China
Shandong Mingzhu Petroleum Equipment Co. Ltd China
Shandong silicon new materials Co., LTD. China
SHANDONG WELLDONE ENVIRONMENTAL NEW MATERIALS CO., LTD China
Shandong Zhongjie Pressure Equipment Co., Ltd. China
Shanghai OCHS Internat. Trade Co., LTD China
SHANGHAI ZHAOHUI PRESSURE APPARATUS CO., Ltd. China
Shanxi Donghuang Wind Power Flange Manufacturing Co., Ltd. China
Shanxi Fenglei Drilling Tools Co., Ltd. China
SHINDA(TangShan) Creative Oil & Gas Equipment Co China
Shuttle International Logistics LLC Russia /China
SI CHUAN YONG GUI TECHNOLOGY CO.LTD China
Sichuan Kunlun Petroleum Equipment Manufacturing Co.,Ltd. China
SICHUAN OILMAN MACHINERY CO., LTD China
Sichuan Vacorda Instruments Manufacturer Co., Ltd. China
SIEMENS / GERMANY
SLC / RUSSIAN FEDERATION
SOLCO PYROELEC RUS LTD , / KOREA, REPUBLIC
Soloon Electronics (Beijing) Co., Ltd. China
Sorb XT Germany
SUNLEEM Technology Incorporated Company China
SuzhouOntopMechanical &ElectricalEquipmentCo.,Ltd. China
TAIRIKU TRADING CO., LTD / JAPAN
TIANJIN NITHONS TECHNOLOGY CO.,LTD China
Tianjin Pumps & Machinery Group Co., Ltd. China
TIANJIN SHIHONG PIPELINE CO.,LTD China
TMS RUS,LLC Germany/Russian Fed.
TREVISAN MACCHINE UTENSILI S.P.A. / ITALY
VEGA Grieshaber KG Germany
VITZROCELL CO., LTD , / KOREA, REPUBLIC
VULCANIC SAS / FRANCE
WALTHER-PRÄZISION Carl Kurt Walther GmbH & Co. KG Germany
Weidmüller Interface GmbH & Co. KG Germany
WENZHOU FUJI VALVE CO., LTD China
Wuhan Linmei Head Plate Co., Ltd China
Wuhu Jiahong New Material Co., Ltd China
Wuxi Hengtong Petrolic Machinery Co., Ltd. China
Xi'an Kosun Machinery Co., Ltd. China
Xi'an Tiptop Machinery CO., LTD. China
Yada Pipeline System Co., Ltd. China
Yanggu Wantong petroleum Fittings Co.Ltd China
Yantai Jereh Oilfield Services Group Co. Ltd. China
Zhejiang Dewei Stainless Steel Pipe Industry Co., Ltd. China
Zhejiang Tormin Electrical Co., Ltd. China
Zhejiang Zhenxing Petrochemical Machinery Co. Ltd. China
Zhengzhou Jinshi Machinery Co., Ltd. China
Zhengzhou New Asia Superhard Material Composite Co. Ltd. China
Zibo Hailan Chemical Co. Ltd. China
Zibo Yinghe Chemical Co., Ltd. China
Zigong Zhongxing Wear-resistant New Materials Co., Ltd. China

-2019

-2018

-2017

-2016