Tianjin Guancheng Steel Products Manufacturing Co., Ltd., established on 1998-10-23, The scope of business includes the manufacture of metal structures;Industrial Water Treatment Equipment,heating equipment,Green facilities,plumbing equipment,Anti-corrosion and thermal insulation manufacturing water treatment design and development consulting,Chemical Products(Does not contain flammable, explosive and precursor chemicals),electronics,instrument,meter,building materials,Sanitary Ware Sales;Titanium profile processing,manufacture;Machining;General cargo.(If the above business scope involves industry licensing, the license certificate,Operate within the validity period,If the state has monopoly regulations, it shall be handled according to the regulations.)

Part of Quanta Services, Inc., Quanta Associates LP is a company headquartered in the United States specializing in electrical work.

Xiangtan Xin'ao Gas Co., Ltd., established on 2003-06-27, Business scope includes gas facilities,equipment construction,Install,maintain;Gas transmission and distribution,Design and construction of gas engineering.

Beijing Municipal Engineering Design and Research Institute Co., Ltd., established on 1987-12-02, Business scope includes engineering design;Engineering Investigation;engineering survey;Compilation of urban and rural planning;project consultancy;Engineering cost consultation;project management;Engineering bidding agency;Foreign contracted projects;Water environment assessment;Engineering Technology Research;technology development;Import and export,Technology Import and Export,Agent import and export;Design and produce print ads,Use own<special structure>magazine post ad;water resource management;Geological disaster management service;Highway Management and Maintenance;Municipal facilities management;pressure piping design;host<special structure>periodicals(The periodical publication license is valid until2023year12moon31day);General contracting of housing construction and municipal infrastructure projects.(Market entities independently choose business projects in accordance with the law,Carry out business activities;pressure piping design,General contracting of housing construction and municipal infrastructure projects and projects subject to approval according to law,Carry out business activities in accordance with the approved content after approval by relevant departments;Do not engage in the business activities of projects prohibited and restricted by the industrial policies of the state and this city.)

Hunan Dalu Technology Co., Ltd., established on 2012-12-28, Business scope includes general items:Intelligent water system development;Information Technology Consulting Services;water pollution control;Solid Waste Treatment;Agricultural non-point source and heavy metal pollution prevention and control technical services;Municipal facilities management;Environmental protection special equipment sales;New material technology research and development;Hardware product development;Foreign contracted projects;software development.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)licensed items:Mapping service;Building Intelligent System Design;Construction Engineering Construction;The first type of value-added telecommunications services;Construction labor subcontracting;Inspection and testing service;Quality inspection of construction projects.(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)

Fujian Boda Plastic Industry New Material Co., Ltd., established on 2007-08-24, Business scope includes plastic pipes,Pipe fittings plastic new building materials series products and supporting adhesives,Production of engineering plastics,Sales,to develop,Installation of applications and related products;Self-operated and agent import and export business of various commodities and technologies,Except for the goods and technologies that the state restricts the company to operate or prohibits the import and export of.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Wenzhou Fucheng Construction Engineering Co., Ltd., established on 2007-07-12, Business scope includes licensed projects:Construction Engineering Construction;Residential interior decoration;Quality inspection of construction projects;Mapping service;Construction labor subcontracting;Construction engineering design;Urban domestic waste operating services(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:Engineering Management Services;Municipal facilities management;Landscaping engineering construction;Urban Greening Management;Maintenance of transportation facilities;Sales of signage for traffic and public administration;Cement products sales;Intelligent water system development;Environmental Protection Monitoring;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Machinery and Equipment Leasing;building cleaning service(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license).

Zhongyi Hengtong Construction Investment Development Group Co., Ltd., established on 2008-03-18, Business scope includes investment in construction projects;Municipal public works,building engineering,Trenchless pipeline crossing project,Petrochemical Engineering(Storage and transportation without hazardous chemicals,Production),Power Engineering,Mechanical and Electrical Engineering,Communication Engineering,plumbing,Earthwork(Does not contain blasting),Pipe gallery project,Steel structure engineering,City and road lighting engineering,Sewage treatment project,Waterproof, anti-corrosion and thermal insulation engineering,Special Engineering,urban road engineering,Water Resources and Hydropower Engineering,Landscaping project,Landscape engineering construction;Research and development of new energy technologies;Construction labor subcontracting;Construction machinery and equipment,Drilling tool,pipe,pipe fittings,valve,Wholesale of electrical equipment,Retail and Leasing;Processing of construction machinery and equipment,manufacture;land consolidation;road general cargo transportation;General Cargo Warehousing;Realtor.

Beijing Chuang'an Ya Non-excavation Engineering Technology Co., Ltd., established on 2003-04-01, Business scope includes pipeline repair technology development,Technical Services,technical consulting;General cargo;Construction General Contracting;Professional contractors;Pipeline Trenchless Repair;Pipe Lining Repair;Machinery and Equipment Leasing;sale of building materials(Not engaged in physical store operation),Wujinjiaodian(Not engaged in physical store operation),self-developed product,Equipment,electronic product,computer,Software and Auxiliary Equipment;Commissioned pipe processing,Equipment;Manufacture of electronic and electromechanical equipment,electronic measuring instrument,Other electronic special equipment;product design;Computer System Services;software development;software consulting.(Market entities independently choose business projects in accordance with the law,Carry out business activities;Items subject to approval by law,Carry out business activities in accordance with the approved content after approval by relevant departments;Do not engage in the business activities of projects prohibited and restricted by the industrial policies of the state and this city.)

Shanghai Urban Construction & Municipal Engineering Group, part of Shanghai Tunnel Engineering Co., Ltd., is a Chinese company located in Shanghai. The firm operates as a general contractor for design and construction.

Beijing Urban Construction Design & Development Group Co. Ltd. engages in professional services related to urban construction. Its services include the planning, promotion, financing, design and contracting for urban rail transit, comprehensive transportation hubs, underground space development, industrial and civil construction, municipal building, bridges and roads. The company was founded on 1 August 1990 and is headquartered in Beijing, China.

GS Engineering & Construction Corp. engages in the construction and civil engineering services. It operates through the following businesses: Plant, Power Environment, Housing, Architecture, Civil Engineering and Development. The Plant business includes petrochemical oil and gas. The Power Environment business provides water and wastewater treatment, waste treatment and recycling, combined cycle and thermal power plant, nuclear power plant, co-generation and district heating. The Housing business offers apartments and housing projects. The Architecture business includes office buildings, education, research and medical healthcare facilities, culture, leisure, sports facilities, clean rooms, manufacturing facilities, logistics and remodeling. The Civil business provides roads, bridges and railroads, underground spaces, river development and marine works. The Development business includes domestic and overseas development projects. The company was founded on December 19, 1969 and is headquartered in Seoul, South Korea.

Anhui Haoyu Construction Engineering Co., Ltd., established on 2011-12-13, Business scope includes municipal public works;Water Resources and Hydropower Engineering;building engineering;Road construction;Mechanical and Electrical Installation Engineering;Foundation and Foundation Engineering;Earthwork;Building decoration project;Steel structure engineering;Environmental Engineering;plumbing;Sports facilities engineering;Urban landscaping construction project;City and road lighting engineering;Waterproof, anti-corrosion and thermal insulation engineering;Building Curtain Wall Engineering;Pipe network census,Drainage pipeline TV inspection,repair,unblock,Trenchless Restoration,diving operations.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Shandong Mingzhu Petroleum Equipment Manufacturing Co., Ltd., established on 2008-09-17, Business scope includes oil drilling tools:drill pipe,Drill Collar,Auger,Various tubing,Casing and oil fittings production,Sales,repair,Leasing and technical consulting services,Import and export business of self-operated or agent general business items.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments).

Shandong Xinyuntong Municipal Engineering Co., Ltd., established on 2011-03-23, Business scope includes municipal public works,construction work,Building decoration project,pipeline engineering,plumbing,trenchless engineering,Water supply and drainage project,road works,bridge engineering,Earthwork,mine engineering,Water Resources and Hydropower Engineering,Road construction,tunnel Engineering,Environmental Engineering,Water Conservancy Drilling Project,Mechanical and Electrical Engineering,City and road lighting engineering,Sports facilities engineering,Steel structure engineering,Lighting project,Greenhouse project,Light steel greenhouse project,Building Curtain Wall Engineering,foundation engineering,Waterproof, anti-corrosion and thermal insulation engineering,Landscaping engineering construction;Construction labor subcontracting;Non-standard equipment processing,Sales and Repair;Equipment leasing and technical consulting services;Engineering project construction and management;Building materials sales;flowers,Seedling cultivation,to plant,Sales;Welding and installation of metal materials;Pipeline inspection and repair.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

China Railway No. 3 Engineering Group Co., Ltd. engages in the construction of transportation infrastructure projects and project management. The company was founded on April 1, 1952 and is headquartered in Taiyuan, China.

Tianjin Water Industry Engineering Equipment Co., Ltd., established on 1998-11-18, Business scope includes technology development,consult,Serve,transfer(Environmental Science and Labor Protection,Mechatronics technologies and products);mechanical,electrical equipment,Instrumentation,Wholesale and retail of sewage treatment equipment;Self-operated and agent import and export of various commodities and technologies,Except for the goods and technologies that the state restricts the company to operate or prohibits the import and export of;Environmental protection equipment installation,debugging;Environmental engineering contracting(Can only be operated after obtaining the qualification certificate);The following limited branch operations:Environmental protection equipment manufacturing.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

China Petroleum Pipeline Bureau designs and builds petroleum pipelines. The firm covers the whole industry chain and pipeline core technology such as pipeline R&D, survey, consulting, design, procurement, construction, coating, fitting fabrication, intelligent pigging, maintenance & repair, telecommunication, and commissioning. Its core business includes engineering & construction, technical service and public service. The company was founded in 1973 and is headquartered in China.

Hunan Aerospace Kangda Plastic Co., Ltd., established on 2003-11-19, Business scope includes research and development,manufacture,Sales of water supply and drainage pipes,Pipe fittings and related installation services;research and development,Production,processing,SalesPVCprofiles,plate,Doors and windows and other chemical building materials;research and development,manufacture,Sales of natural gas pipes,Pipe fittings and related installation services;Valve and Cock Manufacturing,Sales;General cargo road transport.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Korea Institute of Civil Engineering and Building Technology contributes to the development of the Korean construction industry.