CSA Group is dedicated to testing for safety, social good and sustainability across key business areas and specialized markets and technologies.

CSTK is a diversified transportation solutions provider of products and services for a variety of applications, including Thermo King transport refrigeration units, comfort systems, auxiliary power units, customized truck bodies, construction equipment, trailer repair & parts, aftermarket HVAC for vehicles & equipment, fleet vehicle graphics, lift gates, trailer skirting, and much, much more. CSTK also offers parts and service for all products.

CTK International (Thailand) Co., Ltd. is a manufacturer and distributor of air filters and air filters. The company has executives with over 20 years of experience and is recognized as one of the leaders in the production of air filters and air filters for industrial plants. The company has produced various products for the public both domestically and internationally.

Cubic Sensor and Instrument Co., Ltd. (hereinafter referred to as "Cubic") is a publicly listed company in SSE STAR Market (stock code:688665), specializing in smart gas sensors and superior gas analyzers. Set up in 2003, situated at “Optics Valley” of Wuhan, China, Cubic has established gas sensing technology platforms including optical technologies .

Cummins Inc. empowers people to grow their careers through meaningful work, building inclusive and equitable teams, coaching, development and opportunities to make a difference. Their wide range of services include Cummins Engine Business, Cummins Power Generation, Cummins Distribution Business, Cummins Turbo Technologies, Cummins Emission Solutions, Cummins Fuel Systems, Cummins Filtration, and Cummins Electrified Power.

Cunningham, Inc. is a mechanical contractor that believes in providing the highest value to customers with high-quality craftsmanship, and cutting edge technology. Their broad range of services include HVAC equipment, plumbing, electrical, architectural metals, industrial and commercial services, and Geo-thermal solutions.

The Copper Sustainability Partnership – CuSP for short - wants to challenge the norm and break the mould to achieve greater environmental thinking, sustainability and longevity within both construction and plumbing industries.

D.T.M. Heating And Air Conditioning proudly serves Dallas - Fort Worth Metroplex, Texas area. As a trusted and reliable HVAC contractor, they specialize in a variety of HVAC installations. They offer comprehensive services including AC repairs, AC installations, thermostat services, heat pump repair, and gas furnace repair. Their expert technicians deliver exceptional service using top-quality parts and equipment.

Dagar Heating & Airhelp with the heating and cooling systems in home or office. Based in Carrollton, their air conditioning repair technicians receive raving reviews as they service homes all over the Dallas metroplex. They strive to offer honest advice and perform expert heating and ac repair services.

Daikin Air conditioning India Pvt. Ltd. (DAIPL) is a 100% subsidiary of Daikin Industries Ltd., Japan, a globally renowned manufacturer of commercial-use and residential air conditioning systems. Backed by the superior technology, the organization offers a wide range of energy efficient air conditioning solutions to the Indian customers.

A wholly owned subsidiary of Daikin Industries Ltd., delivers engineered advanced HVAC technology for commercial, industrial and institutional customers with knowledgeable application expertise.

Daikin Applied UK is the market leader in energy efficient AHU, chiller products and service & maintenance. They offer a full range of product solutions, specifically designed by our trained professionals to meet all your specified requirements.

Daikin is a leading innovator and worldwide provider of advanced, high-quality air conditioning and heating solutions for residential, commercial and industrial applications. In their nearly 90 years of operation, Daikin has sold millions of systems throughout 90 countries. It is their commitment to quality, service and innovation that has allowed them to become the largest manufacturer of HVAC systems and refrigerants in the world.

Dakota provides innovative products and experienced service solutions for: • Electricians • Plumbers • HVAC Technicians • Contractors • Communication companies • City utilities and rural cooperatives • Municipal and rural water systems • Electric, water and gas utilities interested in the latest in metering technology systems • Any company or contractor who utilizes filters and filtration systems

Dallas Plumbing Company is a family-owned commercial and residential HVAC and plumbing company based in Dallas, Texas since 1903. They have sold, installed, maintained and repaired thousands of air conditioning systems across the Dallas area.

Dan-Poltherm specializes in air conditioning, pool ventilation, dehumidification, humidification, and air heating systems. The company's offer is addressed both to designers, installation contractors, investors, and individual customers.

Danaher Corporation is a global science and technology innovator committed to helping customers solve complex challenges and improve quality of life around the world.

Since 1958, Dantherm Cooling has sold more than one million climate control units, and built a solid reputation for providing exceptional customer service before, during, and after a sale.

Manufacturer of process and precision air conditioning equipment for computer rooms, technology centers, or wherever temperature and humidity control is critical.

SAM Pro Enterprise provides an integrated service management, wireless workforce and job cost accounting software for service, construction and national accounts.

Representing top quality manufacturers to HVAC/R wholesalers in AL, N.W. FL, GA, MS, NC, SC and TN with offices in Birmingham, Atlanta, and Charlotte.

Dave's Heating & Air offers exceptional heating system and air conditioning repairs, service, installation; ductless HVAC, heat pumps and more.

David Services Inc. provides heating, cooling, heat pump, furnace & air conditioning installation, repair & maintenance in Lancaster and the surrounding areas.

David Weisman, L.L.C. designs and manufactures gas and electric infrared heater/control packages, and infrared, hot air/convection and combinations ovens, and wet and powder spray booths, and powder spray equipment.

Dawsongroup truck and trailer are the UK's largest independent truck and trailer provider specializing in contract hire, rental and leasing of 4×2 and 6×2 tractor units; curtain side, box and refrigerated rigids; curtain side, box, skeletal, step frame, platform and refrigerated trailers; car transporters; and specialist and bespoke vehicles.

De Rigo Refrigeration has been working in commercial refrigeration for over 50 years, designing and producing exclusively in Italy. They offer complete range of refrigeration units, cold rooms and cells that allow them to provide the Retail sector turnkey solutions, with a highly specialized assistance service in the pre and post sales phase. Innovative solutions, tailored, and with maximum flexibility in delivery times.

Incorporated in 1950, De'Longhi Group is a globally renowned provider of portable heaters and air conditioners. They also manufacture electrical and kitchen appliances, along with consumer goods.

Dealers Supply Company is a wholesale distributor of heating, ventilating, and air Conditioning equipment, supplies. They are based out of Forest Park, Georgia in the United States of America.

Decker & Mattison handles installations, maintenance, repairs and other services of HVAC products like floor/wall furnaces, console heaters, commercial heaters, residential forced air, etc. They operate out of Hutchinson in Kansas.

Decsa Srl is Italian excellence in the development, production and distribution of evaporative cooling products. Their closed-circuit and open cooling towers and evaporative condensers perfectly meet the HVAC, process cooling and industrial refrigeration markets.