panama city panama president juan carlos varela travel china meet counterpart xi jinping friday first official visit panamanian leader asian country come five months nations establish diplomatic relations bilateral meet serve establish new economic trade tourist diplomatic outlook country lead dozen agreements sign nations panama foreign ministry say statement june panama upgrade commercial tie china establish full diplomatic link second important customer key ship canal give beijing major victory break formal relations taiwan foreign ministry say agreements provide basis attract investments chinese innovation panama help boost panamanian export tourism use panama canal varela inaugurate panama first embassy china panama 's president travel china meet xi jinping