STI Manufacturing, Inc. is located east of Willis, Texas on Hwy. 1097. Our facility includes approximately 10,000 square feet of indoor manufacturing and office space. STI has been successfully serving customers since 1984. STI manufactures Thermocouples, RTDs, Multipoint Thermocouples and offers associated items such as Thermowells, Instrumentation, and flow products. Our products are sold to petro-chemical plants, the plastics Industry, large engine manufacturers, engineering contractors, and small companies in need of custom temperature sensors. STI's objective is to supply our customers with Quality products, on time deliveries, and excellent customer service.