commissioning

DC Serwis Sp. z o.o. specializes in comprehensive Data Center projects, including data center construction, server room design, and data center infrastructure maintenance. The company handles the design, execution, and post-sale support phases, serving IT, industrial, and financial sectors across Poland, the EU, Lithuania, Estonia, and Belarus. Founded as its own business in 2013, it has over 25 years of experience and since 2019 has focused on project management for international investors.

Data center constructionfit outMEP installationsmodernizationperformance testingprecision air conditioningproject managementsecurity systemsserver room designUPS and generator power systems

DeAngelis Diamond is a nationally recognized, award-winning construction management firm founded in 1996 that has completed over 6 billion dollars of construction projects. It serves diverse industries including automotive, aviation, business office, club/fitness, educational, faith-based, healthcare, hospitality, manufacturing, storage, multi-family, senior living, non-profit, public, and retail.

BudgetingConstructibility Reviewsconstruction managementcost controlsdesign-buildgeneral contractingLEAN principlespermittingPreconstructionprogram managementschedulingsustainability analysisvalue analysisVR and BIM simulations

Decarb Technologies Corp. is a US-based company incorporated in Delaware dedicated to the development and operation of patented systems that capture, store, and/or repurpose CO₂ from post-combustion industrial processes. R&D operations are maintained in Orange, CA with offices in Toronto, ON and Delray Beach, FL. The company piloted its first in-situ CO₂ capture system at a landfill gas site in Newport Beach, CA in 2017.

CO2 captureforward osmosisinstallationload testingmanufacturingsolvent formulationstress testingsystem design

DEDC, LLC is an engineering and design firm providing mechanical, electrical, plumbing, process, instrumentation and controls engineering, commissioning services, energy audits and modeling, and utility master planning. The firm serves market sectors including research and development, educational, institutional, commercial, manufacturing, chemical/process, healthcare, community and public, hospitality, financial, and historic and cultural. DEDC has LEED Accredited Engineers on staff and certified commissioning professionals.

CADelectrical system designEnergy Modelingfeasibility studiesHVAC system designinstrumentation and controls engineeringLEED designplumbing designprocess engineeringUtility Master Planning

Defense Maritime Solutions (DMS) is a wholly owned subsidiary of Wärtsilä that specializes in the integration and lifecycle sustainment of power, propulsion, and maneuvering systems for U.S. government vessels. DMS supports the design, build, and service lifecycle of vessels, including equipment selection, integration, commissioning, and integrated logistics support for spare parts, maintenance, overhaul, and optimization.

assembly, integration, and testingDiving Servicesengineering supportexpedited light salvagefield servicesproject managementpropulsor/propeller repairROV surveying and inspectionssystem integrationunderwater ship husbandry & inspection (UWILD)wet weld repairs

Defiance Electric, LLC is a design-build electrical and ITS contractor providing progressive, integrated solutions to satisfy customers' needs since 1978. The company describes itself as engineers and electricians who design, implement, and keep customers grounded, installing Division 260000 (power, lighting, and fire alarm) and Division 270000 (communications) systems.

data center designElectrical Designinstallationlighting calculationslighting designNFPA 70B maintenancerebate coordinationthermal imagingUPS system designVisual Inspection

DEG Enterprises Inc. and DACO Construction Co., Inc. design, build, install, and commission turnkey NAVAID (navigational aid) systems and airfield lighting nationwide for private airfields, municipalities, the Army Corps of Engineers, and the FAA. The company cites over 40 years of delivering turnkey NAVAID systems and 45 years of experience with hundreds of completed projects.

airfield electrical workdesigninstallationmaintenance

Dell Consulting, LLC is an engineering and design firm offering electrical, telecommunications, mechanical, energy management, commissioning, and sustainable design services. They serve commercial, K-12 school, higher education, healthcare, government, and sports and recreational projects, including new construction and renovation work, and act as a prime consultant on institutional projects.

electrical engineering and designenergy managementmechanical engineering and designSustainable Designtelecommunications design

Delta Constructors is a full-service construction and fabrication group serving industrial clients of all sizes in petroleum, gas processing and energy projects. Established in 2009 serving Alaska's North Slope, it specializes in brownfield and greenfield construction and maintenance services for industrial and process facilities, using lean manufacturing practices and skilled craftsmen.

coatingselectrical constructionequipment installationhydrostatic and pneumatic pressure testingmechanical constructionpanel rack fabricationpipe fabricationPLC programmingscaffold erectionwelding

Delta Mechanical Contractors, LLC provides commercial and industrial installations of heating, ventilation and air conditioning (HVAC), plumbing and fire protection systems throughout New England. It is one of the largest mechanical contractors in the region, with a union workforce exceeding 200 field employees, primarily represented by Plumbers and Pipefitters Local Union 51 and Road Sprinkler Fitters Local Union 669. Headquarters are in Warwick, Rhode Island, with warehouse operations in Cranston, RI.

design/build installationsfire protectionfire pump installation and performance testingfire sprinkler system designHVAC installationhydraulic calculationsplumbing installationwelding

Deltech Kiln and Furnace Design, LLC (aka DKFD, LLC) was founded in 2016 to supply electric laboratory furnaces and related supplies and equipment to the nuclear science, engineering, and technology communities. DKFD designs, builds, tests, delivers, commissions, and maintains custom furnace systems with nuclear quality assurance oversight and documentation. It is ISO 9001:2015 certified and meets ASME NQA-1:2008 nuclear quality assurance standards.

custom furnace designdeliverydesign reviewfurnace reline supervisionmaintenancemanufacturingon-site installationquality assurance oversighttesting

Trans-Utility Services Inc, established in 2015, provides transformer field services including installation and commissioning, maintenance and repair, testing, and oil processing. The company partners with major OEMs and suppliers to deliver customized solutions for safe, reliable transformer operations.

degasificationhot oil dryoutsmaintenance and repairoil filtrationretrofilltestingthermal cleaningtransformer installationvacuum oil filling

DENALIWELD INC is an employee-owned fiber laser welding machine manufacturer based in Chicago, USA. The company designs and manufactures laser welders, laser cleaners, automation systems, and laser safety equipment in its Chicago factory, with four branches and more than 150 dealer stores worldwide. Its machines are CE/SGS/WPQR-certified, and it designs and manufactures in-house laser sources, control systems, and coolers.

cobot automationin-house laser source designinstallationlaser cleaninglaser control software developmentlaser weldingmaintenanceR&Drobotic weldingtraining

Design Management Group is a consulting engineering firm located in northeastern Pennsylvania, serving contractors, architects, facilities, utilities, and other consulting engineers. The firm provides mechanical, electrical, plumbing, fire protection, technology, utility, and energy engineering services, including commissioning, energy audits, arc flash analysis, and substation and transmission line design.

3D modeling and analysisarc flash analysisdesign-builddistribution OSP designElectrical Engineeringenergy auditsFire protection engineeringMechanical EngineeringPlumbing Engineeringquality controlsubstation designtransmission line design

DRG Architects is a regional, award-winning architectural design firm with over 60 years of experience providing architecture and design services in PK-12 Education, Higher Education, Apartment & Mixed-Use, and Government markets across the Tristate area. The firm emphasizes listening, collaboration, and creating spaces that fulfill functional needs and enhance quality of life. It has offices in Somerset NJ, Manhattan, Philadelphia, and Camp Hill PA, and acquired Vitetta in 2025.

3D Modelingarchitectural designBIMcivil engineeringconstruction administrationHistoric PreservationInterior DesignLandscape ArchitectureLEED designmaster planningstructural engineeringWELL Building Design

Design Systems, Inc. (DSI) is a multidisciplinary manufacturing engineering and consulting firm founded in 1983 that helps manufacturers design better facilities, improve production flow, and bring complex operations from concept through commissioning. With more than 225 engineers and professionals across North America, DSI provides engineering, program management, and consulting services to manufacturers worldwide.

3D laser scanningdigital twinsElectrical Engineeringindustrial engineeringinstallation coordinationlean manufacturingMechanical EngineeringMES consultingprocess optimizationproject managementsimulation

Design West Engineering is an engineering firm founded in January 2000 by partners Rob Cronk and Mark Galle, serving the West Coast with offices in San Bernardino, California and Edmonds, Washington. The firm provides Mechanical, Electrical, Plumbing, Commissioning, Fire Protection, Dry Utility Coordination, and Technology Systems Engineering services for architectural and construction partners.

design reviewElectrical Designfire protection designfunctional performance testingHVAC designMEP designplumbing designtechnology systems engineeringutility coordination

DESMI is a global company that develops, manufactures, sells, and services pumps and systems for critical flow processes. It serves marine, process industry, aquaculture, utility, and defense segments, offering sector insight and expertise to help customers with performance, compliance, and reducing climate impact.

3D laser scanningengineeringinstallationIoT monitoringon-site serviceprefabricationpump manufacturingservice agreementstrainingworkshop repairs

DeTekion Security Systems, Inc. is a U.S. manufacturer of Perimeter Intrusion Detection Systems (PIDS), formed in 1992. The company designs, manufactures, installs and commissions customized outdoor security systems using intrusion detection sensors, serving clients such as the Department of Corrections, Department of Energy, Department of Defense, and military and industrial applications worldwide.

designinstallationmanufacturingsystem layout and designtraining

Diamond Scientific provides gas analyzers and safety equipment for clinical research, environmental monitoring, and hazardous material applications, supporting IVF labs, air quality researchers, and more. The company is an authorized distributor of gas detection systems and offers installation, commissioning, and repair services. It is ISO 17025, UL and safety certified, VOSB certified, a member of the American Biogas Council, and cites over 42 years of experience.

gas analysisgas detectioninstallationrepair

Digital Mentor Inc. is a women-owned company that has developed an industry-leading mobile platform since 2011. The company provides multi-media solutions for operations and maintenance, troubleshooting, procedures, commissioning, and asset management, with a team of field engineers, managers, operators, and construction experts. It serves sectors including disaster response, wastewater, emergency response, tribal utilities, drinking water, energy, and federal, state, local, and private markets.

asset managementoperations and maintenancestartuptrainingtroubleshooting

DIMENZUR COMPAÑÍA LIMITADA is an Ecuadorian company founded in 2003 by founders from the Escuela Politécnica del Ejército Sede Latacunga. It gained experience in the Oil & Gas sector in Ecuador and developed projects internationally in the United States, Colombia, Peru and Brazil. Legally constituted on 3 October 2013 as DISTRIBUIDORA IMPORTADORA EXPORTADORA DE SERVICIOS Y MATERIALES ELECTRICOS "DIMENZUR Cia. Ltda.", it provides engineering, construction, commissioning and start-up services in civil, mechanical, electrical, instrumentation, control and t

Auditingautomationcivil worksconstructionelectricalengineeringinstrumentationMechanicalprocess engineeringstart-upsupervision

Direct Current Preventive Maintenance LLC (DCPM) is a Veteran-Owned Critical Power Management Company based in Manvel, Texas. It sells, services, and installs critical power equipment, specializing in uninterruptible power supply (UPS) preventive maintenance and preventive maintenance on batteries of all chemistries. Its scope of work is based on IEEE standards and can be tailored to each site, with same-day onsite reporting.

24/7 emergency servicebattery removal and replacementload testingpreventive maintenancerepairsstartup

Ditecon, Inc. is a telecommunications construction and operational support company founded in 2021. It provides turnkey wireless infrastructure solutions through field crews and project management, handling scope, coordination, and execution across projects of any scale. Services cover all major structure types and carrier platforms, with a focus on compliance, speed, and reliability.

civil constructionDAS and small cell deploymentdecommissioningemergency response servicesmicrowave link installationnetwork optimizationnetwork upgradespower solutions and integrationstructural evaluationstructural modificationssystem integrationtesting and maintenancetower inspectiontower mapping