Chinese Vice-Premier Wang Yang (left), US Secretary of Commerce Penny Pritzker (center) and US Trade Representative Michael Froman witness the signing of a China-US Memorandum of Understanding on select reverse trade mission on Wednesday afternoon at the conclusion of the 27th China-US Joint Commission on Commerce and Trade held in Washington. The two sides signed two MOUs on Wednesday. The other is an MOU in support of the establishment of the Africa centers for disease control and prevention. Chen Weihua/China Daily