The facility in Holly Springs, North Carolina will support stainless steel-fed batch manufacturing and single-use technologies making the plant more flexible, the firm says. The $550 million investment comes one week after Amgen announced plans to construct a $365 million plant in New Albany, Ohio to support drug packaging. “We are building the facility to support the growing demand for Amgen medicines in the US market,” an Amgen spokesperson told BioProcess Insider. “This new ‘FleXBatch’ drug substance plant will increase…