July 31, 2009. File photo: China's exported F22P frigate for Pakistan is undergoing sea trials. File photo: China-made F22P 251 frigate is under sea trials. According to Pakistan United News Agency on July 30th, Tuesday of this week, the first F-22P frigate built in Hudong-Zhonghua Shipbuilding Factory in Shanghai, China was formally delivered to Pakistan Navy... July 31, 2009....