Custom Manufacturing & Fabrication LLC Build a better product with the help of Custom Manufacturing & Fabrication LLC in Bismarck, North Dakota. We take pride in our work and offer only top-quality products designed to your exact specifications. Everything is designed and built the way you want it. Backed by more than 30 years of experience, our experts are ready to help you create original products that meets your needs. We serve a wide variety of clients ranging from individuals and small businesses to oil field and mining companies. Contact us in Bismarck, North Dakota, for the best rates on bulk custom manufacturing.