PetroChina Co. Ltd. engages in the petroleum related products, services and activities. It operates through the following business segments: Exploration and Production; Refining and Chemicals; Marketing; Natural Gas and Pipeline; and Head Office and Other. The Exploration and Production segment involves exploration, development, production, and marketing of crude oil and natural gas. The Refining and Chemicals segment focuses on the refining of crude oil and petroleum products, production and marketing of primary petrochemical products, derivative petrochemical products, and other chemical products. The Marketing segment includes marketing of refined products and the trading business. The Natural Gas and Pipeline segment comprises transmission of natural gas, crude oil, and refined products and the sale of natural gas. The Head Office and Other segment relates to cash management and financing activities, the corporate center, research and development, and other business services supporting the operating business segments of the Group. The company was founded on November 5, 1999 and is headquartered in Beijing, China.

Tianjin Shitong Huamao Rubber Industry Co., Ltd., established on 2006-12-06, The business scope includes the manufacture of carboxylated styrene-butadiene latex,Sales,road general cargo transportation,Dedicated transport of goods(tank);Import and export of goods and technology.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Weifang Yafeng Chemical Instrument Co., Ltd., established on 2006-04-20, Business scope includes general items:Industrial automatic control system device manufacturing;Industrial automatic control system device sales;Intelligent Instrument Manufacturing;Smart Instrument Sales;Instrument sales;Experimental analysis instrument sales;Sales of electronic measuring instruments;Sales of electrical instruments and meters;Wholesale of hardware products;Valve and Cock Sales;software sales;Calculator Equipment Sales;Mechanical Parts,Parts processing;Mechanical Parts,Parts sales;Instrument Repair;Special Equipment Sales(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)licensed items:Special equipment manufacturing;Technology Import and Export;Import and export(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results)

Shenzhen Jiwei Automation Technology Co., Ltd., established on 2013-09-26, Business scope includes general business items:automation engineering;Domestic Trade;Operating import and export business.,The licensing program is:Automatic instrumentation,Development and production of computer software.

Shanghai Honglang Automation Instrument Co., Ltd., established on 2001-07-09, Business scope includes automation instrumentation,measuring tools(see license)manufacturing,processing,wholesale,retail,Processing of electromechanical equipment,Cold Work Sheet Metal,Electrical Equipment,Radios and Accessories,Hardware,electrical appliance,valve,computer,Software and Auxiliary Equipment,Wholesale of metal products,retail,Automation complete set of equipment design,Install. [Items subject to approval by law,Business activities can only be carried out after approval by relevant departments]

Shanghai Xiongfeng Auto-Control Engineering Co. Ltd., a subsidiary of Shenzhen Maxonic Automation Control Co., Ltd., is a company headquartered in Shanghai, China. The firm wholesales telecommunication equipment, construction materials. It was acquired by Shenzhen Maxonic Automation Control Co., Ltd. on June 19, 2012 for $8.38 million.

MultiDimension Technology is a magnetic sensor manufacturer. that offers diversified solutions for its customers. The company provides customers with magnetic sensors in the form of wafers, bare chips, or packaged devices and also provides customized magnetic sensor designs, wafer fabrication, and test services. In order to meet the demands of various application fields, MDT can provide high performance magnetic sensors in large quantities thanks to its state-of-the-art mass production fab and its validated wafer fabrication technology for magnetic sensors.

Zhangjiagang Kechen Instrument Co., Ltd., established on 1998-03-14, The scope of business includes automatic regulating valves,Refining and chemical equipment accessories,Level gauge series,New energy vehicle motor controller,Sheet Metal Manufacturing,processing,Sales;Self-operated and agent import and export business of various commodities and technologies(Except for commodities and technologies that the state restricts enterprises to operate and prohibits import and export);Photovoltaic power generation project construction,operate.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Anhui Wankong Automation Instrument Co., Ltd., established on 2012-12-11, The business scope includes instrumentation,sensor,Wire and Cable,Bridge,Valve Fittings,High and low voltage switchgear,research and development,Production,Sales;sleeper,tray,Crate,shelf,packing bag,Purification ventilation equipment,Fan equipment production,Sales;Hardware appliances,Fire equipment,Vehicle doors and windows,desiccant(Free of Hazardous Chemicals),Oxygen scavenger(Free of Hazardous Chemicals)Sales;Technical development of production technology for in-vehicle electronic equipment,Technology Transfer and Technology Consulting.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Shanghai Xingshen Instrument Co., Ltd., established on 1998-04-06, Business scope includes licensed projects:Manufacture of civil nuclear safety equipment;Design of civil nuclear safety equipment.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,The specific business items are subject to the approval documents or licenses of relevant departments) General project:Production of industrial automation instruments and mechanical equipment,Sell ​​self-produced products;Complete set of nuclear power equipment and engineering technology research and development;Testing machine manufacturing;Metering service;Technology development in the field of scientific research technology and industrial automation instrumentation and machinery,Technical Services,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Instrument Repair;Wholesale and import and export of similar products of the above products,and provide related services(Commodities that do not involve state trade management,Quota involved,of license-managed goods,Apply in accordance with relevant national regulations);[Items subject to approval by law,Business activities can only be carried out after approval by relevant departments].(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Shandong Yinfeng Refrigeration Equipment Co., Ltd., established on 2014-09-10, Business scope includes general items:Refrigeration,Air Conditioning Equipment Manufacturing;Refrigeration,Air Conditioning Equipment Sales;Manufacturing of special equipment for electrical machinery;Electronic special equipment manufacturing;Manufacturing of auto parts and accessories;Motor manufacturing;Sales of electronic special equipment;Sales of power electronic components;housing lease;Special Equipment Sales;Special equipment rental;Insulation Material Sales;Low temperature storage(Does not contain hazardous chemicals and other items that require approval);Chemical product production(No licensed chemical products);Chemical product sales(No licensed chemical products)(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)licensed items:Import and export;Installation, modification and repair of special equipment;Special equipment manufacturing;Special equipment inspection and testing services;Technology Import and Export(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results)

An Hui Tian Kang Chuan Gan Gu Fen You Xian Gong Si, established on 2015-06-15, Business scope includes general items:Instrument Manufacturing;Intelligent Instrument Manufacturing;Electrical instrumentation manufacturing;Manufacturing of other general instruments;Manufacturing of special instruments;Instrument sales;Instrument Repair;Industrial automatic control system device manufacturing;Industrial automatic control system device sales;Special Equipment Sales;Mechanical and electrical equipment manufacturing;Electrical Equipment Sales;Manufacturing of power facilities and equipment;Manufacturing of Power Electronic Components;Manufacture of power distribution switch control equipment;Mechanical equipment research and development;Machinery sales;Wholesale of electronic components;Metal Products Sales;Metal Material Sales;electric wire,cable management;Optical cable manufacturing;Optical cable sales;Optical communication equipment sales;Research and development of power distribution switch control equipment;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;battery sales;battery manufacturing;Production of battery spare parts;Battery spare parts sales;Manufacture of graphite and carbon products;Recycling and Cascade Utilization of Waste Power Batteries for New Energy Vehicles(No Hazardous Waste Operations);Battery rental;Information Consulting Service(Not including licensing information consulting services);Power Generation Technical Services;Manufacturing of new energy original moving equipment;Sales of new energy original moving equipment;Emerging energy technology research and development;Manufacturing of experimental analysis instruments;Experimental analysis instrument sales;furniture manufacturing;furniture sales;Production of furniture spare parts;Sales of furniture spare parts;Furniture Installation and Repair Services;paint manufacturing(Free of Hazardous Chemicals);paint sales(Free of Hazardous Chemicals);Chemical product production(No licensed chemical products);Manufacturing of Specialty Chemical Products(Free of Hazardous Chemicals).(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)licensed items:Special equipment manufacturing;Special Equipment Design;electric wire,cable manufacturing;Construction labor subcontracting.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,The specific business items are subject to the approval documents or licenses of relevant departments)

Dandong Dongsheng Petrochemical Equipment Co., Ltd., established on 2001-07-19, Business scope includes research and development,manufacture,Sales,repair:Petroleum equipment and accessories,Chemical equipment and accessories,Instrumentation equipment and accessories(Does not include measuring instruments).Import and export of goods and technology(law,Except for items prohibited by law,law,Items restricted by laws and regulations can only be operated after obtaining a license).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments.)

Qinhuangdao Huadian Measurement and Control Equipment Co., Ltd., established on 1999-02-05, Business scope includes complete set of computer control system,Technical development of measurement and control equipment and computer software,Install,debugging;Instrumentation,Design of Industrial Automation Control System,manufacture,Sales and installation;Manufacture of pressure vessel accessories and parts,Sales and installation;other mechanical equipment,Office Machinery,Stationery,hardware products,other chemical products(Excluding hazardous chemicals),Sales of building materials;Measurement and control technology consulting,Technical Services;Measurement and control equipment parts,Processing of high and low voltage power distribution equipment,Sales;Import and export of goods or technology(Except for the import and export of goods and technologies that are prohibited by the state or involve administrative approval);housing lease;Power Engineering,thermal engineering design,construction;electricity supply;Mechanical equipment professional cleaning service;Engineering Technology Consulting Services;Technical development of heating equipment,technical consulting,processing,Install,repair,Sales;heating service;Green facilities,Sales and installation of solar energy equipment;New Energy Technology Development,technical consulting,Technical Services;heat supply;to introduce a job;File Management Service;Computer Data Processing Services;Technology development of household appliances and spare parts,manufacture,Sales,Install**(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Shanghai Zhongmao New Energy Application Co., Ltd., established on 2002-03-26, Business scope includes sales of light hydrocarbon fuels for vehicles,petroleum products,fuel oil(In addition to dangerous goods),Chemical raw materials and products(Removal of hazardous chemicals,Monitor Chemicals,firecrackers,civilian explosives,precursor chemicals),lubricating oil,metallic material,Daily necessities,Hardware machinery,building materials,building decoration materials,auto parts,Instrument sales,Own house rental. [Items subject to approval by law,Business activities can only be carried out after approval by relevant departments]

Anhui Puli Instrument Technology Co., Ltd., established on 2014-06-19, The business scope includes instrumentation,Complete set of equipment for industrial automation system,Research and development of special chemical equipment,Production,Sales;laboratory equipment,glassware,Wire and Cable,Cable,Bridge,Pipe fittings valves and accessories(Without pressure piping components)Production,Sales;Self-operated or agent import and export business of various commodities and technologies(Except for goods and technologies that the state restricts the company's operation and prohibits import and export).[Items subject to approval by law,Business activities can only be carried out after approval by relevant departments]

Shandong Runhe Thermal Equipment Co., Ltd., established on 2007-03-05, Business scope includes design,manufacture,Sales:D1Class I pressure vessel,D2second class low,medium pressure vessel;design,manufacture,Sales,Install:Power Station Boiler Auxiliary Equipment,Intelligent heat exchange unit,Heat Exchanger,Water supply equipment and equipment,Special equipment for metallurgical and chemical production,Power distribution cabinet,Intelligent automatic control system,General parts for metal structures,Green facilities,water treatment equipment;Goods import and export business.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Zhejiang Yipu Lubrication Equipment Manufacturing Co., Ltd., established on 2008-06-03, Business scope includes lubrication equipment manufacturing.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Beijing Boya Control Technology Co., Ltd., established on 2011-09-27, Business scope includes technology promotion;Computer System Services;Economic and Trade Consulting;computer technology training;selling computers,Software and Auxiliary Equipment,electrical machinery,electronic product,Devices and Components,Instrumentation,hardware,AC,Security Technology Protection Products,Communication equipment,General Equipment,Professional setting.(Items subject to approval by law,Carry out business activities in accordance with the approved content after approval by relevant departments.)