(903) 439-3060 - HOLT CAT Sulphur Springs is authorized Caterpillar dealer for Cat equipment sales, service, parts and rentals. Established in 1933, HOLT CAT sells, services and rents heavy equipment, engines and generators for construction, earthmoving, mining, industrial, petroleum and agriculture. HOLT CAT Sulphur Springs sells and services a full line of agricultural machinery, accessories and parts.