NEW BERLIN, Wis. -  ACS Group (Sterlco Steam Control Products) has announced it has promoted Lee Xiong to the position of steam application engineering manager. Reporting to Brad Fax, business unit manager, he will be responsible for overseeing the eEngineering team. Xiong's focus will be on product enhancement, new product development, and value analysis/value engineering (VA/VE) related projects to drive improvement in the steam segment of ACS’s business.