Hallmark Metals is a AS9100D certified business which specializes in creating custom metal enclosures. Our stamping, machining, milling and laser cutting equipmentare state-of-the-art, enabling us to produce highly complex enclos. Hallmark Metals is a AS9100D certified business which specializes in creating custom metal enclosures. Our stamping, machining, milling and laser cutting equipmentare state-of-the-art, enabling us to produce highly complex enclosures using our fully automated lights out capacity to reduce production cost and improve lead time.Our experienced staff understands the entire design process, allowing them to assist in changes that can improve functionality and structural integrity. and at a lower cost. Here is a partial list of the custom metal enclosures we manufacture: 1. Custom Aluminum Enclosure 2. Custom Card Cage 3. Custom Computer Enclosures 4. Electronic Enclosures 5.Our complete sheet metal enclosure production facility is in Glendora, California, just minutes from downtown Los Angeles and a short drive from cities such as Pasadena, Burbank, Long Beach, Anaheim, Santa Ana, Irvine, Costa Mesa, and Santa Monica. We also offer precision custom metal enclosures for other south California cities such as San Diego,.