Certified Stainless Service, Inc. DBA West-Mark is a global manufacturer of specialty transport trailers. Our product line in ... cludes liquid, dry bulk, oilfield, construction, platform, specialized, towing and defense trailers. Our vision: “West-Mark is the trusted innovative leader of transportation products globally.” Since 1967, we've remained focused on our customers and users to provide products and services that meet or exceed their expectations. Although primarily we manufacture tank transport trucks & trailers. West-Mark has the ability to accommodate nearly all truck & trailer needs. West-Mark owns and operates the most extensive facilities of like kind in the United States. West-Mark's facilities provide the manner and means for West-Mark to diversify Operations. These facilities have broadened West-Mark's manufacturing capabilities, allowing our company to manufacture new products, adding variety to our growing product list. Some of the product models added are specialty equipment items including D.O.T. Code tanks, and aircraft re-fueler tanker trailers built to specified military standards. West-Mark is now able to offer a selection of different material types to our customers. The use of different materials in manufacturing and fabrication processes adds flexibility to each product model's strength, capacity, and functional ability, and grants our customers more precise customization options. We have also formed many strategic relationships with other OEM's that allow us to provide our customers with a single source solution for all of their needs. West-Mark is a premier DOD contractor supplying defense products to the U.S. and International Military/Governmental entities. Our company holds contracts with: GSA - GS-30F-018DA Sourcewell - #060920-CER (Class 4 - 8 Chassis with Related Equipment) DLA - SPE8EC-18-D-0006 (Trucks and Trailers) DLA - SPE8EC-18-D-0009 (Sweepers & Scrubbers) read more