has operations in Billerica, MA, USA and Shanghai, China with a sales and service presence in over 30 countries. Roughly half the company’s approximately 400 employees are located outside the US. In 2010, BTU will celebrate its sixtieth anniversary. Since 1950, and with over 10,000 units shipped, BTU International has been the trusted name for high-tech customers with a need to solve high-volume thermal processing challenges. We have over 200 patents and patents pending.BTU is an ISO certified company in both the US and China manufacturing facilities.