HOLSTEIN, Iowa -- With demand for its architectural doors surging, VT Industries officials explored potential expansion sites last year. The company turned to the small Northwest Iowa city where the third-generation business got its start more than 50 years ago and continues to flourish. ÂWe looked around the country to decide where we were going to either start up a new plant or add on to one of our existing plants and we really felt like with our workforce here and how well everythingÂs running here we wanted to keep the facility here in Holstein and expand upon it," said...