Interstate Assembly Systems, formerly known as Southwest Products, specializes in providing custom vehicle upfitting and assembly solutions tailored to meet precise specifications for a variety of industries. With a focus on quality and efficiency, their experienced team delivers reliable products and services, from small equipment to complete vehicles, to fulfill short and long-term business needs.
Committed to meeting all customer statutory and regulatory requirements, Interstate Assembly Systems is certified to the ISO 9001:2015 standard and registered to conduct business with government agencies. Their extensive options for custom builds cater to industries such as wallboard material handling, mechanics, fuel and lube, and railroad, ensuring they have solutions for a wide range of needs.
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