Hee Engineering

Arrowhead Engineering, a small woman-owned business based in Ontario, California, has been dedicated to quality manufacturing since its inception in 1997. With over 35 years of design engineering and manufacturing experience, the company specializes in a wide range of industries, including aerospace, medical, and telecommunications. Recognized as a 2010 World Class Supplier Award Winner and ISO 9001:2015 certified, Arrowhead Engineering ensures compliance with stringent quality control systems. Their facilities, encompassing approximately 4,000 square feet, are equipped with advanced measurement instrumentation to guarantee the accuracy of all fabricated parts. Generated from the website

Thompson Engineering specializes in the design and installation of telecommunications, nurse call, sound, access control, TV signal distribution, security, closed-captioned television, low-voltage control and media systems. The company, which maintains operations in Riverside, Calif., provides its services to Riverside, San Bernardino and Orange counties in California. With more than 100 systems in place in school districts, the company is a recognized leader in the educational market. But Thompson Engineering also offers its systems to health care, professional sound reinforcement and security companies. Systems Contractor News ranked Thompson Engineering No. 37 on its list of the top 50 systems integrators in the United States.