About Williams Service Inc. Williams Service Inc. is an authorized International Parts & Service Contractor serving the Florence area. We are proud to carry a large selection of new and pre-owned inventory. When you are ready to invest in a new truck, our friendly and knowledgeable sales, financing, service, and parts departments are prepared to make sure your experience is outstanding, from assisting while you're making your choice to ongoing maintenance and customization. We value the opportunity to create a long-term relationship with our customers, and we do that by giving you the best customer service available. Contact Us Call us at (620) 878-4225 or come by today and experience our superior service and selection! We look forward to serving you!