Sichuan Chuanshi Diamond Bit Co., Ltd., established on 1998-03-31, Business scope includes general items:Manufacture of special equipment for oil drilling;Sales of special equipment for oil drilling;Special Equipment Repair;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Technology Import and Export;Import and export;Metal Material Sales;Non-ferrous metal alloy sales;Machinery and Equipment Leasing;Hardware retail;Retailing of computer software, hardware and auxiliary equipment;Digital Video Surveillance System Sales(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license).

CNOOC China Ltd. produces oil and gas in China. It provides prospecting, refinement and processing, and sale of offshore oil and natural gas products. The company also offers offshore petroleum exploration, development, production, and sales. CNOOC China was founded in 1999 and is headquartered in Beijing, China.

Suzhou Anengjie Tools Co., Ltd., established on 2018-02-23, Business scope includes diamond drill bit,Research and development of oil field downhole tools,production and sales;Diamond composite sheet,Carbide,Sales and technical services of special equipment and parts for oil drilling and production;Equipment,hardware products,Plastic products,Leather,electronic product,Chemical Products(Excluding hazardous chemicals),Purchase and sale of metal materials;Self-operated and agent import and export business of various commodities(Except for goods that the state restricts the company to operate or prohibits import and export).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

CNPC Chuanqing Drilling Engineering Co., Ltd., established on 2008-07-18, Business scope includes general items:Engineering and Technology Research and Experimental Development;Mineral dressing;Engage in investment activities with own funds;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Engineering technical service(planning management,survey,design,Except supervision);Oil and Gas Technical Services;Industrial Internet Data Service;data processing services;Data processing and storage support services;software development;Information system operation and maintenance services;Information Technology Consulting Services;Resource recycling technology research and development;Soil Pollution Control and Restoration Services;Environmental emergency management service;Environmental Protection Monitoring;Eco-environmental material manufacturing[Branch operation];Water Environment Pollution Prevention and Control Services;Atmospheric Environmental Pollution Prevention and Control Services;Soil Environmental Pollution Prevention and Control Services;Solid Waste Treatment;Import and export;Import and export agency;Technology Import and Export;Foreign contracted projects;Refined oil wholesale(Free of Hazardous Chemicals);Lubricant sales;Chemical product sales(No licensed chemical products);Sales of office equipment consumables;Fire Equipment Sales;Sales of labor protection products;Auto New Car Sales;Machinery sales;Mechanical Parts,Parts sales;Sales of special equipment for oil drilling;Special Equipment Sales;Petroleum product sales(Free of Hazardous Chemicals);electronics sales;internet sales(Except for products that require a license for sale);software sales;Auto Parts Retail;sales agent;Information security equipment sales;Security equipment sales;Catering Management;Land use right lease;housing lease;Non-residential real estate leases;Machinery and Equipment Leasing;Small and mini bus rental business service;emergency services;Safety technical training for special operators;business training(Does not include education and training,Vocational skills training and other licensed training);Unit logistics management service;Manufacturing of Specialty Chemical Products(Free of Hazardous Chemicals)[Branch operation];Manufacture of non-metallic mineral products[Branch operation];R&D of metal products;General equipment manufacturing(Does not include special equipment manufacturing)[Branch operation];Manufacturing of special equipment(Manufacture of licensed professional equipment not included)[Branch operation];Instrument Manufacturing[Branch operation];Metalwork Repair;Mechanical equipment research and development;General Equipment Repair;Domestic Freight Forwarding;Domestic container cargo transportation agency;Loading and unloading;Storage equipment rental service;Operation of Road Freight Transport Station;International Freight Forwarding;Environmental protection special equipment sales;property management;Motor Vehicle Repair and Maintenance(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license).licensed items:Indoor environment detection;accommodation service;Catering Services;Gas operation;Water production and supply;road freight transport(Does not contain dangerous goods);Construction Engineering Construction(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).

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.

The Home Depot is a home improvement retailing company that combines its physical stores with an online presence to provide customers with innovative products at great value. The company specializes in the fields of retail, home improvement, and customer service. The Home Depot was founded in 1978 and is headquartered in Atlanta, Georgia.

China National Offshore Oil Corporation, or CNOOC Group, is a major national oil company in China. It is the third-largest national oil company in the People's Republic of China, after CNPC (parent of PetroChina) and China Petrochemical Corporation (parent of Sinopec). The CNOOC Group focuses on the exploitation, exploration and development of crude oil and natural gas in offshore China. The Group is the largest producer of offshore crude oil and natural gas in China and one of the largest independent oil and gas exploration and production companies in the world. The Group mainly engages in exploration, development, production and sale of crude oil and natural gas. The Group’s core operation areas are Bohai, Western South China Sea, Eastern South China Sea and East China Sea in offshore China. Overseas, the Group has oil and gas assets in Asia, Africa, North America, South America, Oceania and Europe. As at 31 December 2015, the Group owned net proved reserves of approximately 4.32 billion BOE, and its average daily net production was 1,358,022 BOE (unless otherwise stated, all amounts of reserve and production in this report include our interests in equity method investees). The Group had total assets of approximately RMB664.4 billion.

China National Petroleum Corporation (CNPC) is an integrated international energy company. Based in China, we have oil and gas assets and interests in over 30 countries in Africa, Central Asia-Russia, South America, the Middle East and the Asia-Pacific. CNPC is China's largest oil and gas producer and supplier, as well as one of the world's major oilfield service providers and a globally reputed contractor in engineering construction, with businesses covering petroleum exploration & production, natural gas & pipelines, refining & marketing, oilfield services, engineering construction, petroleum equipment manufacturing and new energy development, as well as capital management, finance and insurance services. - Crude output: 110.33 million tons per year - Natural gas output: 79.86 billion cubic meters per year - Crude oil production: 53% of China's total - Natural gas production: 74% of China's total - Crude runs: 147.16 million tons per year - Domestic service stations: 19,840 - Domestic pipelines: 66,801 kilometers, including 16,369 kilometers for crude oil (nearly 67% of China's total), 40,995 kilometers for natural gas (77% of China's total) and 9,437 kilometers for refined products ( 48% of China's total) - Providing oilfield services and engineering construction in 63 countries around the world.

Chengdu Zhongshan Technology Co., Ltd., established on 2004-05-28, Business scope includes electronic products,computer software,Development of hardware system,develop,Sales and technical service;computer system integration;Network integrated wiring(National law,Except where prohibited by administrative regulations;law,Items restricted by laws and regulations can only be operated after obtaining a license;Involving the industrial industry to set up another branch or choose another business site for operation).

Chongqing Honggong Construction Machinery Co., Ltd. is a high-tech enterprise that focuses on the design, research and development, manufacturing and sales of highway security construction machinery, relying on construction machinery products. The founder team was established in September 2002, adhering to the development strategy of "innovation is benefit" and "quality is life", and adhering to the development concept of technological innovation. Now it has more than 100 employees, 9 generations of products, 4 national invention patents, 2 appearance patents and 56 utility model technology patents. It has been awarded as a "consumer trustworthy unit", "quality trustworthy unit", "private enterprise for industrial economic development", "scientific and technological innovation brand enterprise", "high-tech product" and many other honors. Chongqing Honggong Construction Machinery Co., Ltd. is located in Liangping District Industrial Park, Chongqing, which is the hometown of Shuangguitang, honored as the "Ancestor Court of Zen Buddhism in Southwest China". The company's equipment and products have excellent performance, advanced technical design, sophisticated processing flow and reasonable mechanical configuration, which effectively improve the construction efficiency and ensure the control of construction costs. The main business items of the company: highway guardrail drilling machine, highway guardrail piling machine, highway guardrail drilling machine, multi-function automatic mixer, concrete batching machine, vehicle mounted drilling machine.

Danyang Danying Tools Manufacturing Co., Ltd., established on 1994-11-30, Business scope includes twist drill,Manufacture, processing and sales of twist drill blanks and white steel knives,High Speed ​​Tool Steel Sales,Assembly and sales of chess and card tables.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Zhenjiang Huayi Machinery Co., Ltd., established on 2004-09-03, Business scope includes machinery manufacturing,repair,Sales of mechanical products and accessories;Precision Mold Design,Manufacturing and sales;road general cargo transportation.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Jiangmen Kingboard High-Tech Co. Ltd., a subsidiary of Kingboard Holdings Ltd., is a Chinese company located in Jiangmen that manufactures and distributes drill bits.

Xinyu Siyin Trading Co., Ltd, established on 2020-07-03, Business scope includes general items:Domestic trade agent;Communication equipment sales;Electronic Components Retail;furniture sales;internet sales(Except for products that require a license for sale);Sales of building decoration materials;luggage sales;Jewelry Retail;Cosmetics Retail;Personal Hygiene Sales;Office Equipment Sales;Maternal and baby products sales;Clothing and apparel retail;Toy,Animation and entertainment goods sales;Sporting Goods and Equipment Retailing;Outdoor product sales;Stationery retail;Office Supplies Sales;Hardware retail;Auto Parts Retail;glasses sales(Contact lenses not included);Shoes and hats retail;needle textile sales;Retail of kitchenware, sanitary ware and daily necessities;Pet food and supplies retail;gift flower sale;Home Appliance Sales;Lighting sales;Sanitary Ware Sales;Mechanical Parts,Parts sales;Retailing of computer software, hardware and auxiliary equipment;electronics sales;Sales of digital cultural and creative technology and equipment;General merchandise sales(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

China Second Metallurgical Group Corp. Ltd. is a Chinese company ultimately controlled by the Government of China that engages in the metallurgical engineering and construction business.

Zhangjiagang Kangda Medical Technology Co., Ltd., established on 2020-08-17, Business scope includes licensed projects:Production of Class II Medical Devices;Import and export;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) General project:Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Production of Class I Medical Devices;Sales of Class II Medical Devices;Sales of Class I Medical Devices(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Changzhou Baoke Precision Tools Co., Ltd., established on 2013-03-29, Business scope includes tools,machine part,Processing and manufacturing of stamping parts;Sales of metal materials;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).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Chengdu Gaopu Petroleum Engineering Technology Co., Ltd., established on 2008-08-07, The scope of business includes activities ancillary to oil and gas extraction(petroleum free,natural gas extraction);Solid Waste Treatment(Limited to branch operations and does not contain dangerous goods);Quality Inspection Technical Services(Business activities can only be carried out after obtaining relevant licenses);Petroleum Engineering Technical Consulting,Serve;Sales:Oil drilling equipment accessories,Chemical raw materials(Free of Hazardous Chemicals),hardware tools;Machinery and Equipment Leasing;Warehousing Services(Does not contain dangerous goods);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).

Tiandi (Yulin) Mining Engineering Technology Co., Ltd., established on 2020-12-07, Business scope includes general items:Coal Washing;Chemical product production(No licensed chemical products);General equipment manufacturing(Does not include special equipment manufacturing);Mining machinery manufacturing;Manufacturing of electronic components and electromechanical components;Instrument Manufacturing;Industrial automatic control system device manufacturing;General Equipment Repair;Special Equipment Repair;Instrument Repair;Undertake the engineering construction business of the head office;General machinery and equipment installation services;Chemical product sales(No licensed chemical products);Retailing of computer software, hardware and auxiliary equipment;Sales of electronic components and electromechanical components;Sales of hydraulic power machinery and components;Digital Content Production Services(Does not include publishing);Machinery and Equipment Leasing;business management;Information Consulting Service(Not including licensing information consulting services);Bidding agency service;Engineering and Technology Research and Experimental Development;Engineering Management Services;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Mechanical equipment research and development;Geological disaster management service;Safety technical training for special operators(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license).licensed items:coal mining;Construction of geological disaster control engineering;General contracting of housing construction and municipal infrastructure projects;Various construction activities;construction professional work;Construction labor subcontracting;Inspection and testing service;Geological Hazard Risk Assessment;Construction Engineering Survey;Geological disaster control engineering survey;Construction engineering design;Geological disaster control engineering design(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).