Description. D & G Machine Products, Inc., a Certified ISO 9001 & AS9100D Company with a Main Plant located in Westbrook and a Fabrication Plant located in Gorham, Maine, has been offering full-service Precision Machining, Fabrication, Painted and Assembled Machine Products for more than 50 Years. D&G Machine supply’s several Nationwide Industries that include: Aerospace, Computer Chip Production, Defense Contracts, Medical, Power Generation, and...