41. In 1914, China joined the Universal Postal Union , and Shanghai was designated as the exchange for international mail. 42. By February 2005, 117 of the 190 member countries of the Universal Postal Union had postal code systems. 43. Currently, mail to and from Vietnam and China has to go through other countries in the Universal Postal Union . 44. The Universal Postal Union ( UPU ) has identified Trust Services as the greatest opportunity for global postal growth. 45. French is the official language of the Universal Postal Union , with English added as a working language in 1994. 46. In 1974, Zambia issued a series of 4 stamps as commemoratives for the centenary of the Universal Postal Union . 47. The 192 members of the Universal Postal Union are listed below in alphabetical order, with the date of membership. 48. Originally the postal administration was admitted into the Universal Postal Union on 3 May 1961 and remains a member. 49. During that time some colours were changed to comply with Universal Postal Union regulations, and three new values were added. 50. The stamps are not recognized by the Universal Postal Union and thus are not valid for postage anywhere outside Abkhazia.
