BEIJING, May 26 (AFP) - China's Association for Relations Across the Taiwan Strait (ARATS) has invited two top Taiwan negotiators to Beijing from June 22 to 24, official media said Wednesday. The invitation was extended to Taiwan's Straits Exchange Foundation (SEF) vice-chairman and secretary-general, Shi Hwei-yow and the SEF deputy secretary-general, Jan Jyh-horng, the official Xinhua news agency said. The talks will follow up on a four-point common understanding reached by ARATS President Wang Daohan and SEF Chairman Koo Chen-fu during a meeting in Shanghai in October. They were also expected to continue exchanging views on issues related to Wang's future Taiwan visit, Xinhua said. Wang and Koo met at a summit which Beijing hoped would pave the way for political negotiations leading towards reunification. It has since shown increasing impatience with Taiwan, which has declined China's offers of political talks, preferring to concentrate on practical issues like cooperation on crime, communications and economic issues. China said last week the time was not yet right for cross-straits talks on "routine matters" because of differences over whether political discussions could take place. The most recent announcement did not specify what the SEF negotiators were being invited to talk about. Taipei-Beijing relations reached a low point in 1995 after China called off rapprochement talks and held war games in the Taiwan Strait following an historic trip to the United States by Taiwanese President Lee Teng-hui. Beijing claimed the visit was aimed at promoting the cause of Taiwan independence. Beijing has proposed reunification with Taiwan under the "one country, two systems" mechanism it uses to rule Hong Kong, but the offer has been rejected by Taipei which says it would be downgraded to local government status in any talks with the mainland. Taiwan demands democracy on the mainland as a precondition for reunification. Taiwan and China have been governed separately since 1949, when the nationalist army fled to the island after losing a bitter civil war to the communists on the mainland. In the absence of direct links, the two bodies handle exchanges.  