The free trade agreement reduced tariffs on 7,881 product categories, or 90% of imported goods to zero.  This reduction entered into force in China and the six original ASEAN members, Brunei, Indonesia, Malaysia, the Philippines, Singapore and Thailand. The other four countries are expected to follow in 2015.  The amendments to the free trade area framework mainly concerned Vietnam. These changes should help Vietnam to reduce tariffs and set deadlines as guidelines.  Eleven heads of government signed the framework agreement in Phnom Penh, Cambodia, on November 4, 2002. : Hassanal Bolkiah (Sultan of Brunei Darussalam), Hun Sen (Prime Minister of Cambodia), Megawati Soekarnoputri (President of Indonesia), Bounnhang Vorachith (Prime Minister of Laos), Mahathir ben Mohamad (Prime Minister of Malaysia), Than Shwe (Prime Minister of Burma), Gloria Macapagal-Arroyo (President of the Philippines), Goh Chok Tong (Prime Minister of Singapore), Thaksin Shinawatra (Prime Minister of Thailand), Phan VÄƒn Kháº£i (Prime Minister of Vietnam), Zhu Rongji (P) Minister of Foreign Affairs of the State Council of the People`s Republic of China).   In line with the current regional and global economic landscape, on 22 November 2015, 27 November 2015, the Protocol amending the Framework Agreement on Comprehensive Economic Cooperation between ASEAN and China was signed. . .