HUNTINGDON VALLEY, Pa.--(BUSINESS WIRE)--Polonia Bank, the banking unit of Polonia Bancorp, Inc. (PBCP), has announced the appointment of Ronald G. Langlois as Vice President of Commercial Lending. Mr. Langlois brings over 30 years of experience in providing the Greater Philadelphia markets with commercial loans of all types. He most recently served as Chief Credit Officer of First Cornerstone Bank and previously served as Vice President – Commercial Lending at Susquehanna Bank. Mr. Langlois wi