More than 100 years after it was founded, Olsson Roofing Company is still known for integrity, continuous improvement, customer service, and professionalism. With two locations, and more than 200 annual projects spanning the Midwest, Olsson Roofing Company has earned recognition as the largest commercial roofing company in the state of Illinois. We specialize in the maintenance, installation, and repair of commercial and industrial roofing systems, and architectural sheet metal.

Oberlander Electric Co is a Construction company located in 8826 W Us Highway 24, Mapleton, Illinois, United States.

Since 1971, Eagle Concrete has been a trusted source for commercial concrete construction in the Chicagoland area. Principles of reliability, quality, service and safety remain at the foundation of every project. As a union contractor, typical projects in both the public and private markets include schools, apartment complexes, retail and industrial facilities, parks and stadiums, mid-rise buildings and many others. Pride is taken in maintaining a consistent high ethical standard, a comfortable work environment and a strong commitment to every employee. Eagle Concrete will continue to invest in improving efficiency and streamlining operations to allow for further personal development and company-wide growth. Eagle Concrete employs a staff of industry-leading professionals that assist our customers through every phase of their project. By maintaining accessibility, flexibility and responsiveness, our clients remain confident in knowing that all services will be performed above industry standards for each of their unique needs. Accommodating our customers’ budgets and schedules, staying informed of the latest industry technologies and materials, and investing in new equipment has allowed Eagle Concrete to develop a repeat customer base and a reputation as a well-established and respected Concrete contractor. Our Services • Concrete Foundations • Interior Flatwork • Structural Concrete • Concrete Paving & Curbs • Site Concrete

Get it done safely. Get it done on budget. Get it done on time. These aren’t empty promises at DePue Mechanical. They’re a way of life. DePue Mechanical has been proudly serving the industry in the Illinois Valley, Joliet and the Chicagoland area since 1964. As a partner in all your boiler, piping, HVAC, and process mechanical needs, the DePue Team of Professionals offers you the experience, expertise and track record to professionally handle everything from minor repairs to a grass-roots plant addition. Our client-partners distinguish DePue Mechanical as best-in-class. Each and every DePue mechanic passes our stringent standards for safety, productivity and professionalism. You’ll see what a difference those standards make in your next project.

State Mechanical Services is a premier mechanical contractor in Northern Illinois serving the Chicagoland area, Southeastern Wisconsin, and Northwest Indiana. We specialize in mechanical construction and the service and maintenance of commercial and industrial heating, ventilation, and air conditioning (HVAC) systems. With over 100 years of combined experience, our team of industry professionals can help deliver your next project on time and within budget. With today’s focus on “Green Building” construction standards, State Mechanical Services has the ability to assist you on your next LEED® certified project. State Mechanical Services provides our customers with: Project budgeting from conception to completion Plan and spec projects that are priced competitively Design / Build projects that offer the best solutions for your budget Value assisted engineering for plan and spec projects which are over budget Assistance achieving certification points on LEED® projects Preventative maintenance agreements that reduce owning and operating costs Proactive equipment replacement solutions for existing facilities 24 hour service capabilities At State Mechanical Services our mission is simple as we strive to provide excellence in customer service and continue to be the “Benchmark for Mechanical Contractors”. Please check out our company's website!

Established in 1976, Ficek Electric & Communication Systems, Inc. is a full service electrical, low voltage, security contractor specializing in IP telephony. We provide design and build services for commercial, industrial, healthcare, governmental and residential customers. Our highly-skilled construction and management teams allow us to specialize in projects of all sizes and complexities with a focus on safety and quality assurance. As a long-standing member of the National Electrical Contractors Associations and the IBEW, we are your single point of contact for the following electrical and low voltage needs: * Electrical * Outside Plant work including directional boring * Voice and Data low voltage cabling and design * AVAYA business telephone Systems including VOIP * Fire Alarm Systems * Security and Intrusion Systems and Design * 24 Hour UL Alarm Monitoring All of our divisions offer the most innovative technology, allowing our customers to put the critical job of keeping their wiring infrastructure and systems in the skilled and capable hands of our certified installers and designers. We continue to uphold a reputation for quality sales and service throughout the industry. As a certified woman owned business, we are committed not only to our success, but more importantly to yours. Our business has progressed with technological advancements over the years but some things haven’t changed; we remain a family owned business operating on family values. You will find us to be a customer-oriented company with a staff dedicated to exceptional customer service.

The Lakone Company is a manufacturer of Thermoplastic Injection Molding Products.

IOC Construction is a leading General Contractor serving businesses and communities throughout the Greater Chicago and Milwaukee Area. We specialize in providing top-notch services in painting, construction, roofing, and maintenance. What sets us apart is our ability to manage a project from start to finish, both inside and out. We have extensive experience in various markets, including Industrial, Commercial Hi-Rise, and Multifamily complexes. With a proven track record of excellence and a strong commitment to quality, you can trust IOC Construction to be your reliable partner for all your construction needs.

Concrete Structures is a Chicago-based, family-owned and operated construction company founded in 1960, and specializing in cast-in-place concrete construction projects ranging from high-rise buildings to heavy construction such as bridges, tunnels, and airport pavements. We also build high Ff/Fl number slabs-on-ground and provide specialty flooring such as epoxy-coating of existing concrete.

Welcome to Little Electrical, your comprehensive partner for electrical contracting and engineering solutions. Serving both the Public and Private sectors, we pride ourselves on delivering excellence in every project we undertake. Our esteemed clientele comprises a multitude of distinguished Industrial and Commercial enterprises spanning across the UK, Ireland, and Europe. With a steadfast commitment to innovation, quality, and client satisfaction, we are dedicated to powering the future of businesses across continents. We specialise in four core areas 1. Automation - our engineers and programming experts design and develop bespoke automated control systems helping to improve efficiency and safe money for businesses. 2. Electrical Contracting – With over 50 years experience, our contracting division has the skills to handle any Electrical project from any industry and sector. 3. Products - Littles stock and distribute specialist control gear and automation equipment from the world’s leading manufacturers and offer a flexible and personal service to a broad customer base. 4. Testing - All businesses have a legal and moral obligation to provide a safe working environment for their employees. Little Electrical can help you meet this obligation by providing a broad spectrum of electrical testing services that will ensure that your business complies with European health and safety legislation. The success of Little Electrical has been founded on the hard work and dedication of our employees, many of whom have greater than twenty years’ service with the company. We recognise that our staff are our greatest asset and as a result we continue to invest heavily in their training and development, to ensure that we achieve our goal of being first choice in the supply of products and services within our chosen markets.

DRF Water Heating Solutions mission is to help as many people as we can. As a plumbing services provider, we feel fortunate to be in a position to help our customers with solutions that bring their lives back to normal. DRF Water Heating Solutions provides domestic hot water systems for residential, multi-family, university, and commercial properties. As a top provider of hot water solutions in the Midwest we’ve completed over 195,000 domestic hot water system installations. Our plumbers and technicians are background checked, fully trained, certified, and licensed and utilize the latest technology to address issues with bathroom plumbing, kitchen plumbing, and irrigation system. We perform irrigation RPZ certifications and specialize in water heater repair and water heater installation. DRF provides design, installation, service, rebate procurement, and funding options that create positive ROI for multi-family and commercial hot water needs. Through our exclusive Water Assessment process, DRF uses SMART monitoring technology to evaluate customer’s water and energy usage and develop multi-faceted cost-saving strategies. DRF is the exclusive water heater sales, logistics, and installation service provider for "The Home Depot" stores in Northern Illinois and several locations throughout the Midwest. This includes store support, call center operations, sales, inventory management, installation, and compliance functions. DRF is a top Trade Ally for Nicor Gas / AGL Resources providing energy efficiency programs to properties throughout the Chicagoland area. Our unique design-build service allows multifamily and commercial property owners to benefit from convenient, cost-effective, one-stop-shop for cost-neutral resource conservation solutions with short-term ROI. For career opportunities, visit www.drftps.com/careers

Winninger Excavating, Inc. is an established excavating contractor offering a variety of services to suite your needs. Our goal is to be the preferred contractor by choice and to be sure your project comes in on time and ahead of schedule. Our expertise ranges anywhere from Mass Earthwork, Site Utilities, Heavy Highway, to environmental work.