Gaishin Manufacturing


Gaishin Manufacturing is a family-owned manufacturing company specializing in precision machining. We are headquartered in Benton Harbor, MI and have an additional facility in Kalamazoo, MI.
Gaishin Manufacturing has become a preferred supplier across a broad range of industries, including agriculture, medical, aerospace, electronic controls, automotive, industrial, and hydraulic/fluid power. We are capable of processing aluminum, brass, copper, iron, steel, steel alloys, and stainless steel in the forms of bar stock, extrusions, forgings, or castings. We also have prototyping and mass production capabilities.
We are ISO 9001:2015 ASR Certified. Gaishin Manufacturing earned the Parker Hannifin Gold Link Supplier Award 2017 and the Parker Hannifin Silver Link Supplier Award 2019. Most recently, we were the recipient of the prestigious Parker Hannifin Silver Link Supplier Award 2021!
Our Story
Founder and Owner Mike Gaishin established Gaishin Manufacturing in 1989 to fulfill the need for quickly-produced prototype parts. With a background in tool and die and experience working as an engineer, he began prototyping parts and testing his designs. Shortly after, Gaishin Manufacturing was born in small space behind a bowling alley, consisting of only a Bridgeport mill and a South Bend lathe. Through innovation, technology, and an unrelenting drive for perfection, Gaishin Manufacturing has grown exponentially into a premier, full-service supplier of precision quality products.
Core Values
At Gaishin Manufacturing, our mission is to be a world-class manufacturer supplying precision products and value to our customers while abiding by our core values.

Proven Process
Gaishin Manufacturing cultivates trust and customer satisfaction. We plan for it from the first introduction through production. Read more about our Proven Process …
