Assembly Solutions From The Drawing Board To The Production Line. At Gilman, we build what we engineer. Gilman provides innovative customized assembly solutions for the automotive, commercial, industrial, consumer and appliance manufacturing industries. Gilman has engineered and built assembly solutions from giant airplane wing spars to household door locks. Gilman has over 60 years experience in the assemblly industry, and combined engineering experience of over 1500 years. Our continued success is the direct result of our commitment to research, leading-edge engineering, a relentless dedication to quality and the committment to our customers' success. Isn't it time for you to partner with Gilman?