Pollution & Treatment Controls

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Euro Tech Holdings Company Limited distributes water treatment equipment, laboratory instruments, analyzers, test kits and related supplies, and power generation equipment in Hong Kong and the People's Republic of China. It sells analytical instruments, such as spectrophotometers, colorimeters, turbidimeters, ion-selective electrodes, chemical oxygen demand and digestion apparati, and precision re-agent dispensing devices, as well as chromatographs, mass spectrometers, flow injector analyzers, automated sample preparation workstations, and atomic spectrometers. The company offers environmental monitoring instruments, such as air and water quality monitoring instruments; sample pre-treatment equipment; and general-purpose laboratory instruments consisting of water quality monitoring and analysis equipment. In addition, it distributes general testing and measuring equipment, including multi-channel digital and analogue recorders, signal amplifiers, and calibration equipment for energy conservation, renewable energy equipment, power quality analyzers, and continuous emissions monitoring systems to power plants, railway and aero-space industries, utilities, educational institutions, and telecommunications companies. Further, it offers process control systems, including sensors, temperature and pressure gauges, power and energy consumption meters, flow meters, valves, temperature and pressure transmitters, control devices, and calibrators, as well as waste-water treatment moisture, power, energy, and harmonic analyzers; systems engineering services; and maintenance, installation assistance, and calibration services. Additionally, it distributes programmable logic controllers, telemetry units, and supervisory control and data acquisition systems and software; and engages in water and waste-water treatment engineering and air pollution control business. The company was founded in 1971 and is headquartered in Hong Kong, Hong Kong. Address: Gee Chang Hong Centre, Hong Kong, Hong Kong

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ClearSign Technologies Corporation designs and develops products and technologies to enhance emission and operational performance, energy efficiency, emission reduction, safety, and overall cost-effectiveness of industrial and commercial systems in the United States, the People's Republic of China, and Hong Kong. The company's technologies include ClearSign core burner technology consists of an industrial burner body and a downstream porous ceramic or metal flame stabilizing structure; ClearSign core process burner technology that provides a direct burner replacement for traditional refinery process heaters; ClearSign core boiler burner technology; ClearSign core flaring burners that can be used individually, or in combination, to provide a flare product with extremely low nitrogen oxide emissions; and ClearSign eye flame sensor, an electrical flame sensor for industrial applications. It serves energy, institutional, commercial and industrial boiler, chemical, and petrochemical industries. The company was formerly known as ClearSign Combustion Corporation and changed its name ClearSign Technologies Corporation in November 2019. ClearSign Technologies Corporation was incorporated in 2008 and is headquartered in Tulsa, Oklahoma. Address: 8023 East 63rd Place, Tulsa, OK, United States, 74133

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China Natural Resources, Inc., through its subsidiaries, engages in the exploration and mining of metal properties in the People's Republic of China. It explores for lead, silver, and other nonferrous metals. The company holds interest in the Moruogu Tong mine that covers an area of 7.81 square kilometers located in Bayannaoer City, Inner Mongolia. The company is headquartered in Sheung Wan, Hong Kong. China Natural Resources, Inc. operates as a subsidiary of Feishang Industrial Group Co., Ltd. Address: West Tower, Sheung Wan, Hong Kong

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CECO Environmental Corp. provides critical solutions in industrial air quality, industrial water treatment, and energy transition solutions worldwide. It operates in two segments: Engineered Systems and Industrial Process Solutions. The company engineers, designs, manufactures, and installs non-metallic expansion joints and flow control products, including rubber expansion joints, ducting expansion joints, and industrial pinch and duck bill valves; membrane-based industrial water and wastewater treatment systems; and provides dust and fume extraction solutions comprising consultation, design, manufacturing, installation, and service, as well as water and wastewater treatment solutions. It offers engineered and configured products and solutions, including dampers and diverters, expansion joints, selective catalytic reduction systems, severe-service and industrial cyclones, dust collectors, thermal oxidizers, filtration systems, wet and dry scrubbers, separators and coalescers, water treatment packages, metallic and non-metallic pumps, industrial silencers, and fluid handling equipment, as well as plant engineering services and engineered design build fabrication services. In addition, the company offers industrial engineered noise control solutions, including custom acoustical gen-set packages, ambient air baffles, acoustical louvres, and skid enclosures; process filtration solutions for hydrocarbon and chemical processing; and energy and water conservation systems and equipment. The company markets its products and services to natural gas processors, transmission and distribution companies, refineries, power generators, industrial manufacturing, engineering and construction companies, semiconductor manufacturers, compressor manufacturers, beverage can manufacturers, metals and minerals, and electric vehicle producers. CECO Environmental Corp. was founded in 1869 and is headquartered in Dallas, Texas. Address: 14651 North Dallas Parkway, Dallas, TX, United States, 75254

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Atmus Filtration Technologies Inc. designs, manufactures, and sells filtration products under the Fleetguard brand name in North America, Europe, South America, Asia, Australia, Africa, and internationally. The company offers fuel filters, lube filters, air filters, crankcase ventilation, hydraulic filters, coolants, and fuel additives, as well as other chemicals; and fuel water separators and other filtration systems to original equipment manufacturers, dealers/distributors, and end-users. Its products are used in on-highway commercial vehicles and off-highway agriculture, construction, mining, and power generation vehicles and equipment. The company was founded in 1958 and is headquartered in Nashville, Tennessee. Address: 26 Century Boulevard, Nashville, TN, United States, 37214

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Arq, Inc. produces activated carbon products in North America. The company's products include granular activated carbon, powdered and granular activated carbon, and colloidal carbon products; Arq Powder Wetcake, a fine and low-ash coal waste-derived particle; and additives for air emissions control. Its products are used in various applications, including water treatment, ground water remediation, soil sediments, air emissions, and asphalt additives. The company was formerly known as Advanced Emissions Solutions, Inc. and changed its name to Arq, Inc. in February 2024. Arq, Inc. was founded in 1997 and is headquartered in Greenwood Village, Colorado. Address: 8051 East Maplewood Avenue, Greenwood Village, CO, United States, 80111