2023
2022
2021
2019
2018

-2023

* 21.03.2023

5 ELEM HI-TECH CORPORATION
A.V.V. ADDED VALUE FOR VALVES SRL
AIPU SOLIDS CONTROL
AMICO (CHENGDU) GAS POWER EQUIPMENT CO., LTD
ANHUI TIANRUN CHEMICALS CO, LTD
ANPING GUANGMING METAL PRODUCTS CO., LTD.
ANPING SHENGJIA HARDWARE MESH CO., LTD
ANPING YANZHAO GRIDDLE WIRE MESH CO.,LTD.
ARES PHE
AUTOWER GROUP
BAPTEEC LTD-BEIJING AEROSPACE PETROCHEMICAL TECHNOLOGY AND EQUIPMENT CORPORATION
BEIGING SURE-LEHE INTERNATIONAL EXHIBITION CO., LTD.
BEIJING CEW INTERNATIONAL FAIR CO. LTD.
BEIJING HB INTERNATIONAL EXHIBITION CO., LTD
BEIJING LKM ENERGY TECHNOLOGY CO. LTD
BEIJING POWER INTERNATIONAL EXHIBITION CO., LTD (BEIJING)
CANGZHOU GREAT DRILL BITS CO. LTD
CANGZHOU HANGXIN FLANGE CO., LTD
CANGZHOU LONGTAIDI PIPETECHNOLOGY CO., LTD.
CANGZHOU RUITAI PETROLEUM MACHINERY CO. LTD.
CANGZHOU SAITEM PIPING ENGINEERING CO.,LTD
CANGZHOU ZHONGSHUN STEEL PIPE TRADE CO.,LTD,
CASPIAN OIL CITY,
CHANGFENG WIRE & CABLE CO., LTD
CHANGZHOU POWER STATION AUXILIARY EQUIPMENT CO. LTD.
CHAODA VALVES GROUP CO., LTD.
CHENGDU CHENGGAO VALVE CO. LTD.
CHENGDU ENERTEK ENERGY TECHNOLOGY&SUPPLY
CHENGDU ENERTEK ENERGY TECHNOLOGY&SUPPLY CO., LTD.
CHENGDU TIANYI ENERGY EQUIPMENT MANUFACTURING CO.,LTD.
CHENGDU XIEN PETROLEUM-TECH
CHINA INNOVATION EXHIBITION CO,LTD
CHINA INNOVATION PETROLEUM UNION EXHIBITION CO., LTD
CHINA NATIONAL LOGGING CORPORATION
CHINA NATIONAL PETROLEUM CORPORATION ( CNPC ) JI-CHAI
CHINA PETROLEUM & PETROCHEMICAL EQUIPMENT INDUSTRY ASSOCIATION
CHINA VIGOR DRILLING OIL TOOLS AND EQUIPMENT CO., LTD,
CHINT
CHONGQING BEST CUTTER CO.,LTD
CHONGQING KAIFENG MEDICAL INSTRUMENT CO., LTD
CMEC INTERNATIONAL EXHIBITION CO., LTD.
CNPC BOHAI EQUIPMENT MANUFACTURING CO., LTD.
CNPC HUABEI PETROLEUM FEIDA CO., LTD.
CNPS.COM LIMITED
Consyst Electronics
CUBIC SENSOR AND INSTRUMENT CO. LTD.
CZ ELECTRIC CO., LTD.
DALIAN HAIXIN CHEMICAL INDUSTRIAL CO. LTD
DANDONG TOP ELECTRONICS INSTRUMENT (GROUP) CO. LTD
DBV VALVE C0., LTD.
DEPAMU (HANGZHOU) PUMPS TECHNOLOGY CO.,LTD.
DEZHOU UNITED PETROLEUM TECHNOLOGY CORP
DFXK PETROLEUM MACHINERY CO. LLC
DONGCHEN INTELLIGENT TECHNOLOGY CO. LTD.
DONGYING JINMEI CHEMICALINDUSTRY CO.,LTD
DONGYING ROBUST PETROLEUM EQUIPMENT CO. LTD
DONGYING SHIZHANYUANYANG INTERNATIONAL EXHIBITION CO.,LTD
DONGYING WEIMA PETROLEUMDRILLING TOOLS CO. LTD
DrillGeoRobotics
DRIPRO CO. LTD
ENOCH CONTROLS PRIVAT LIMITED
EVETRON
FARMASINO CO. LTD
FRIENDS-LINK (BEIJING) OIL TECHNOLOGY LTD.
FUJIAN WANLONG SUPERHARDMATERIAL TECHNOLOGY CO.,LTD
GUANGZHOU GU-POWER TECHNOLOGY CO.LTD
GUANGZHOU JST SEALS TECHNOLOGY CO.,LTD
HANGZHOU FORTUNE GAS CRYOGENIC GROUP CO LTD
HANGZHOU GUONENG STEAM TURBINE ENGINEERING CO LTD
HANGZHOU GUONENG STEAM TURBINE ENGINEERING CO. LTD. (HGT)
HANGZHOU STEAM TURBINE AUXILIARY EQUIPMENT CO.,LTD.
HANGZHOU YEHEE ENERGY TECHNOLOGY CO.,LTD,
HANWEI ELECTRONICS GROUP CORPORATION
HARBIN AIR CONDITIONING CO LTD
HARDWARE MESH. CO. LTD.
HEBEI BOXING PETROCHEMICALEQUIPMENT CO., LTD.
HEBEI CANGHAI NUCLEAR EQUIPMENT TECHNOLOGY CO. LTD.
HEBEI GN SOLIDS CONTROL CO., LTD.
HEBEI HAIHAO GROUP INDUSTRY PIPING CO., LTD,
HEBEI HARBON EXPO TECHNOLOGY CO.,LTD
HEBEI HITECK MACHINERY EQUIPMENT CO.,LTD
HEBEI JIALANG OIL DRILLING EQUIPMENT CO. LTD.
HEBEI JINFUJIALI IMPORT & EXPORT TRADE CO.,LTD
HEBEI JINSHENG PIPE FITTING MANUFACTURING CO.,LTD.
HEBEI MINHAI PIPE FITTING CO.,LTD.
HEBEI RUISHI BITS MANUFACTURING CO. LTD.
HEBEI XINHUAFA PETROLEUM MECHANICAL MANUFACTURER CO., LTD
HeBei YuanDong Pumps Manufacturing Co. Ltd
HEBEI XINYUE HIGH PRESSURE FLANGE AND PIPE FITING CO.,LTD.
HEFEI HUASHENG PUMPS & VALVES CO LTD
HEFEI XINHU CANNED MOTOR PUMP CO., LTD.
HEILONGJIANG LANGCI TECHNICAL DEVELOPMENT CO. LTD
HEILONGJIANG NORTH SHUANGJIA DRILLINGTOOLS CO., LTD.
HENAN CHICHENG
HENAN SF DIAMOND CO.,LTD.
HENAN SHENLONG PETROLEUM DRILLING TOOLS CO. LTD
HENAN YALONG DIAMOND TOOLS CO. LTD
HENAN ZHONGYUAN SPECIAL STEEL EQUIPMENT MANUFACTURING CO., LTD.
HENAN ZHONGYUAN SPECIAL STEEL EQUIPMENT MANUFACTURING CO., LTD.
HENGSHUI WEIJIA PETROLEUM EQUIPMENT MANUFACTURE CO., LTD.,
HENGYING WIRE CLOTH CO. LTD.
HILONG
HILONG
HILONG
HONGHUA GROUP
HOUPU CLEAN ENERGY GROUP CO. LTD
HQTS - QUALITY CONTROL AUDITS AND TESTING
HUANGSHAN WEI GE LION PUMP CO ., LTD
HUAYING (XIAMEN) INDUSTRY CO ., LTD
HUAYING FA YE
HUBEI SLETPETRO TECHNOLOGY CO., LTD.
HUBEI XINGFA CHEMICALS GROUP CO., LTD
IRAN HOUSE OF INNOVATION AND TECHNOLOGY (IHIT)
JEREH GROUP (BEIJING)
JIANGSU HUAFEI ALLOY MATERIAL TECHNOLOGY CO. LTD
JIANGSU HUAHAI M & C TECHNOLOGY CO., LTD.
JIANGSU KANGRUI NEW MATERIAL TECHNOLOGY CO. LTD
JIANGSU TAISHUN ENERGY TECHNOLOGY DEVELOPMENT CO., LTD.
JIANGSU WEINENG ELECTRIC CO., LTD.
JIANGSU WELLHEAD DRILLING EQUIPMENT CO. LTD
JIANGSU XINGCHANGE SPECIAL STEEL PIPE CO LTD
JIANGSU XINYANG NEW MATERIALS CO LTD
JIANGSU HUAYING VALVES CO., LTD
JIANGYIN LONG RUN FLANGE CO., LTD.
JIANGYIN LONG RUN FLANGE CO., LTD.
JIANGYIN SHIMING STEEL TUBE CO.,LTD
JIANGYIN YANGZI FITTING CO.,LTD
JINAN BAOSHAN PETROLEUMEQUIPMENT CO. LTD.
JINAN LONGCHAO PETROLEUM MACHINERY CO., LTD
JINAN XINYU CEMENTED CARBIDE CO.,LTD
JIUJIANG LANZO NEW MATERIAL TECHNOLOGY CO., LTD
JOYO M&C TECHNOLOGY CO. LTD
KERUI
KXME
LANDOCEAN ENERGY SERVICES CO. LTD.
LANG FANG INNOVATIVE THINKING TECHNOLOGY CO.,LTD
LIAONING KAICHENG IMPORT & EXPORT TRADE CO. LTD
LIAONING TOLIAN TECHNOLOGY DEVELOPMENT CO.,LTD
LIXIN VALVE GROUP CO. LTD.
LUOFU VALVE GROUP CO., LTD.
LUOHE LETONE HYDRAULICS TECHNOLOGYCO., LTD.
LUOYANG REASTAR TRANSMISSION CO., LTD
LUOYANG YUSION INDUSTRIAL CO. LTD.
MAIKEN INDUSTRIAL MATERIALS (XIAMEN) CO., LTD.
MARATHON HEATER (I) PVT LTD., UDAIPUR
NANJING JIANGU HIGH MIDDLE PRESS VALVE MANUFACTURING CO. LTD
NANYANG CISK PETRO-MACHINERY CO. LTD
NANYANG DOER GAS EQUIPMENT CO. LTD.
NEW ASIA SUPERHARD MATERIAL COMPOSITE CO., LTD.
NEW CENTURY MACHINERY CO., LTD
NEW LOTOKE INDUSTRY GROUP CO. LIMITED
NEWAY VALVE (SUZHOU) CO.,LTD.
NEWTON FLUID TECHNOLOGY CO.,LTD
NINGBO CHUANGXING INTELLIGENT TRANSMISSION CO. LTD
NSEN VALVE CO. LTD
OILGAS EXCHANGE LP
OPTIMA ENGINE PARTS
ORIENT ENERGY & TECHNOLOGIES CO.,LTD
ORIENTAL PRO-ENERGY CONSULTING ORGANIZATION
OUMING VALVE GROUP CO.,LTD.
OVIKO GROUP CO., LTD.
PANJIN LIAOHE OILFIELD TIANYI PETROLEUM EQUIPMENT COMPANY LTD.
QINGDAO CHANGHUI PIPES CO., LTD
QINGDAO HADY INDUSTRIAL CO. LTD
QINGDAO SINGHO INDUSTRIAL COMPANY LTD
QIUBAO VALVE CO. LTD
RAYS FLOW CONTROL, INC
RealLab!
RG PETRO-MACHINERY GROUP CO LTD
ROCK
RONGSHENG MACHINERY MANUFACTURE LTD OF HUABEI OILFIELD, HEBEI
RSD SOLIDS CONTROL EQUIPMENT
SAILUOKE FLUID EQUIPMENT INC.
SBW ELECTRO-MECHANICS IMPORT & EXPORT CORPORATION
SEED TECHNOLOGIES CORP.,LTD
SENBEN LIGHTING TECHNOLOGY INCORPORATED COMPANY
SHAANXI AEROSPACE PUMP AND VALVE TECHNOLOGY GROUP CO., LTD
SHAANXI NUOYING AUTOMATION INSTRUMENTS CO. LTD
SHANDONG BEYOND PETROLEUM EQUIPMENT CO., LTD
SHANDONG DIBO PETROLEUM MACHINERY CO.,LTD
SHANDONG HUADONG BLOWER CO. LTD
SHANDONG MINGZHU DRILLING TOOLS CO.,LTD.
SHANDONG NUOER BIOTECHNOLOGY LIMITED COMPANY
SHANDONG RUIHAI MISHAN CHEMICAL CO.,LTD
SHANDONG VS PETROLEUM TECHNOLOGY CO.,LTD
SHANDONG WANDA CABLE CO. LTD
SHANDONG WELLDONE ENVIRONMENTAL NEW MATERIALS CO. LTD.
SHANDONG WINTECH TECHNOLOGY CO. LTD
SHANDONG YACHENG PETROLEUM TECHNOLOGY CO. LTD.
SHANDONG YUELONG RUBBER AND PLASTIC TECHNOLOGY CO. LTD.
SHANDONG ZHONGJIE PRESSURE EQUIPMENT CO. LTD
SHANDONG ZHONGZIYI MEASUREMENT AND CONTROL TECHNOLOGY CO. LTD
SHANGHAI CHENZHU INSTRUMENT CO. LTD
SHANGHAI CHENZHU INSTRUMENT CO. LTD.
SHANGHAI EXTRONG OILFIELD TECHNOLOGY CO.,LTD.
SHANGHAI GUANXIN FORGING CO LTD
SHANGHAI HUGONG VALVEFACTORY
SHANGHAI LIANCHENG (GROUP) CO., LTD
SHANGHAI VALVE FACTORY CO LTD
SHENYANG PUMP PRODUCTS CO.,LTD
SHENYANG TAIGE OIL EQUIPMENT CO. LTD
SHENZHEN FLUID SCIENCE & TECHNOLOGY CO., LTD
SHENZHEN GOALTEK ELECTRIC CO. LTD
SHENZHEN HAIMINGRUN SUPERHARD MATERIALS CO., LTD.
SHIJIAZHUANG RUKER OILFIELD TECHNOLOGY CO.,LTD.
SHINDA(TANGSHAN) CREATIVE OIL&GAS EQUIPMENT CO., LTD
SHUANGLIANG ECO-ENERGY SYSTEMS CO. LTD
SHUANGLIANG ECO-ENERGY SYSTEMS CO. LTD
SI CHUAN YONG GUI TECHNOLOGY CO,LTD
SICHUAN JINXING CLEAN ENERGY EQUIPMENT CO., LTD
SICHUAN L/G OILFIELD EQUIPMENT, LTD.
SICHUAN SUNNY SEAL CO. LTD.
SICHUAN VACORDA INSTRUMENTS MANUFACTURER CO., LTD
SICHUAN XIONGCHEN TECHNOLOGY CO.,LTD.
SIJIATEX
SINO OIL KING SHINE CHEMICAL CO. LTD.
SINOSTEEL STAINLESS STEEL PIPE TECHNOLOGY (SHANXI) CO. LTD
SIYOSEAL (SHENZHEN) TECHNOLOGY CO.,LTD.
SJ PETROLEUM MACHINERY CO.,SINOPEC
SNIP SPECIAL STEEL GROUP LTD
SPECIAL VALVE JIANGSU FLUID MACHINERY MANUFACTURING CO. LTD
SUFA TECHNOLOGY INDUSTRY CO.,LTD. CNNC
TECHNIQUE LLC
TEJI VALVE GROUP CO LTD
TIANJIN AOKAI OIL TOOLS CO., LTD.
TIANJIN BREAK PETRO-MACHINERY MANUFACTURING CO. LTD
TIANJIN JEONSURE SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD
TIANJIN JINGGONG PETROLEUM SPECIAL PIPE FITTINGS CO. LTD
TIANJIN KINGPETRO EQUIPMENT CO. LTD
TIANJIN PENGSHENG ELECTROMECHANICAL EQUIPMENT CO. LTD
TIANJIN PIPE INTERNATIONAL ECONOMIC & TRADING CORPORATION
TIANJIN PUMPS & MACHINERY GROUP CO., LTD.
TIELING LUPING SPECIAL PURPOSE VEHICLE CO. LTD
TINGER
TOPE EXHIBITION SERVICES CO.,LTD
TRUST VALVE(SUZHOU) CO.,LTD.
TUOPU INDUSTRY (JIANGSU) CO. LTD
Turbine Machine Middle East
UNIASEN (TIANJIN) CO., LTD
UNIBROM CORP.
UNIGREEN ENERGY
VH-MARINETECH CO.,LTD
VIEWLINK DIAMOND CO. LTD
VITZROCELL CO., LTD ,
VTORK TECHNOLOGY (WUXI) CO., LTD.
WAFANGDIAN METALLURGICAL BEARING GROUP CO. LTD
WANGLIAN GROUP
WAROM TECHNOLOGY INCORPORATED COMPANY
WE INDUSTRIAL LIMITED (HONG KONG)
WEIFANG SUBTOR ROTATING PRECISION MACHINERY CO. LTD
WEIQIXIN PETROLEUM MACHINERY TIANJIN CO., LTD
WEMETRO INDUSTRIAL CONTROL EQUIPMENT (LANGFANG) CO. LTD
WENZHOU CHENGYUAN IMPORT AND EXPORT CO., LTD
WENZHOU DONGYI MACHINERY MANUFACTURING CO.,LTD
WENZHOU JUNEN VALVE CO. LTD
WENZHOU WELSURE STEEL CO. LTD
WUHAN LINMEI HEAD PLATE CO. LTD.
WUHU JIAHONGNEW MATERIAL CO, LTD
WUXI BEYOND AOK ELECTRIC CO. LTD
XI’AN WEST CONTROL INTERNET OF THINGS TECHNOLOGY CO.,LTD
XIAMEN BERYLLIUM COPPER TECHNOLOGIES CO., LTD.
XIAMEN GOLDEN EGRET SPECIAL ALLOY CO. LTD. (GESAC)
XIAMEN SONDA PETROCHEMICAL EQUIPMENT CO.,LTD
XI'AN KOSUN MACHINERY CO. LTD
XI'AN TIPTOP MACHINERY CO., LTD.
XI'AN YUQI HIGHT PRESSURE SEAL ELECTRIC CONNECTOR CO.,LTD.
XIFOLONG VALVE GROUP CO. LTD
YANGZHOU YUXIN PIPE FITTINGS CO. LTD
YOSUN (TIANJIN) ENGINEERING CO., LTD
ZECO VALVE GROUP CO., LTD.
ZHE JIANG HONGYU NEW MATERAILS CO.,LTD
ZHEJIANG ANIX VALVE TECHNOLOGY CO., LTD
ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY CO., LTD
ZHEJIANG BEIER CONTROL VALVE CO.,LTD
ZHEJIANG BOTELI TECHONOLOGY CO.,LTD.
ZHEJIANG DATIAN MACHINE CO.,LTD
ZHEJIANG DECA CONTROL VALVE METER CO., LTD,
ZHEJIANG JK TECHNOLOGY CO. LTD
ZHEJIANG LISHENG SPRING CO., LTD.
ZHEJIANG LOZOSE AUTOMATIC CONTROL VALVE CO., LTD
ZHEJIANG LOZOSE AUTOMATIC CONTROL VALVE CO., LTD
ZHEJIANG SHENGQI TECHNOLOGY CO.,LTD
ZHEJIANG TIANDE PUMP CO. LTD
ZHEJIANG TOP SEALING AND INSULATION CO.,LTD
ZHEJIANG TORMIN ELECTRICAL CO., LTD
ZHENGZHOU YUGUANG CLAD METAL MATERIAL CO LTD
ZHONGMAN PETROLEUM AND NATURAL GAS GROUP CO., LTD (ZPEC)
ZHONGQIU VALVE CO., LTD
ZHONGQIU VALVE CO., LTD
ZHUZHOU METAL PLAYER TECHNOLOGY DEVELOPMENT CO., LTD
ZIAS MACHINERY
ZIBO HAILAN CHEMICAL CO.,LTD.
ZIGONG CEMENTED CARBIDE CORP. LTD.
ZIGONG LITUO NEW MATERIAL CO., LTD.
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-2019

-2018

-2017

-2016