Iuoe Local 399 is a writing and editing company based out of 1300 W Higgins Rd, Park Ridge, IL, United States.

HRP Construction has provided installation and maintenance for sewers, watermains and treatment facilities as well as general excavating services primarily to municipal, commercial and institutional customers throughout northern Indiana.

MIDLAND ENGINEERING CO INC is a construction company based out of P O BOX 1019, SOUTH BEND, Indiana, United States.

Kwasigroch Electric Inc is an electrical/electronic manufacturing company based out of 10719 163rd Pl, Orland Park, Illinois, United States.

Great Lakes Roofing & Construction is a commercial roofing contractor servicing Chicago and Northwest Indiana. We specialize in flat and metal roof installation, repair and restoration for commercial, industrial, institutional and multi-family residential buildings. Founded in 1989 by Russell Peterson, Great Lakes Roofing & Construction has been providing quality, professional contracting services to Chicagoland for more than 20 years. In that time we have built a solid reputation for providing our customers with prompt and professional service, superior workmanship and quality roofing materials that far exceed our customer’s expectations. Our entire team is committed to delivering state of the art services, utilizing the latest standards and techniques. Our crews are experienced and dedicated roofers Chicago customers know they can rely on for excellent workmanship. We build on this experience by continually educating and training our crews on the latest roofing practices and product knowledge. We are roofing professionals in every sense of the word. Great Lakes Roofing & Construction is licensed in both Illinois and Indiana, and we are bonded and fully insured, including liability and workers’ compensation coverage. These are important protections for our customers.

Jones & Cleary is a family owned commercial roofing and sheet metal business that has served Chicagoland proudly since 1920. We employ only the best roofers and sheet metal workers in the Chicago area. Our history of success as a company is thanks to the excellent training and experience of our workers and project supervisors, who are dedicated to completing your commercial, industrial, historical or green roofing project on time, safely, and to the highest standards of quality. We work closely with all of our clients to plan and install the best roofing system for your precise architectural specifications, without interrupting the everyday operations of your business, facility, plant or historical structure. For more than 100 years, our commitment to quality and unique combination of experience, technical know-how and craftsmanship has established Jones & Cleary's reputation as the premiere roofing and sheet metal contractor in Chicagoland.

Kwiatkowski Masonry Inc is a construction company based out of 1006 N Indiana Ave, Crown Point, IN, United States.

GT Mechanical Inc is a full-service HVAC contractor located in Homer Glen, IL serving the Chicagoland area and NW Indiana.

R. Carlson & Sons, Inc. is a family owned and operated business providing outstanding services, competitive prices and quality construction since 1947. R. Carlson & Sons, Inc. has earned a solid reputation as a reliable contractor, working with a wide range of clients, from small neighborhood ice cream shops to global corporations. We have relationships with many loyal customers and have developed into a "world class company"​ with many long term, negotiated sole-source alliances. We are experts in our business and deliver our services, safely, efficiently, on time, and on budget. That is why we've maintained a leadership position in a highly competitive industry. Our financial strength and history allows us to provide a comprehensive insurance program from leading insurers and bonding for even your largest projects. We look forward to the opportunity to work with you and build a long lasting working relationship. We've excelled in the General Contracting/Construction Management business for approximately 75 years. We have earned a reputation for integrity, reliability and on time completions. Typical projects include: Restaurants, Gas Stations, Convenience Stores, Car Washes, Retail Centers, Site Development, Industrial Facilities, Soil Contamination/Remediation, and many other projects. Major clients include: Wal Mart, JPMorgan Chase Bank, Fifth Third Bank, Wendy's, Panda Express, Chili's, White Castle, Speedway, bp, ExxonMobil, Thornton's and a host of others.

Van Drunen Heating & Air Conditioning – Proudly serving your heating and cooling needs in South Holland, Homewood, Orland Park, the South Suburbs, Hammond IN, and NW Indiana.

For over 30 years, Northern Indiana Mechanical has been servicing the petroleum industry in Northern Indiana. We have maintained a strong, constant working relationship with many major establishments in Northern Indiana, Illinois and Southern Michigan since our inception. Our goal is and always has been, customer satisfaction. To meet ever changing customer needs, Northern Indiana Mechanical has focused on diversification, hard work, training and unparalleled quality craftsmanship Our trained technicians provide only the highest level of quality service. 24 Hours a day, 7 days a week Radio dispatched Management always available Factory trained State certified Servicing equipment, includes but not limited to: Dispensing systems Fuel Management Systems Bulk Fuel AST & UST Tanks Bio-diesel injection systems Underground piping systems Weights & Measures compliances