Mansfield Plumbing Products recently announced it will now produce more than 90% of its product volume in the United States, increasing its plant capacity by 1 million pieces. The Perrysville, Ohio, sanitary-ware plant expansion is the largest in more than 20 years in the United States, the company said. With increased U.S. manufacturing, Mansfield can now offer shorter lead times and higher fill rates than any other vitreous china manufacturer, according to the company.