celebrated 50 years of diplomatic relations. High-level visits CCP leader, President and Premier visits from China to Mexico Premier Zhao Ziyang (1981) President Yang Shangkun (1990) Premier Li Peng (1995) President Jiang Zemin (1997, 2002) Premier Wen Jiabao (2003) President Hu Jintao (2005, 2012) President Xi Jinping (2013) Presidential visits from Mexico to China President Luis Echeverría Álvarez (1973) President José López Portillo (1978) President Miguel de la Madrid Hurtado (1986) President Carlos Salinas de Gortari (1993) President Ernesto Zedillo (1996) President Vicente Fox (June & October 2001) President Felipe Calderón (2008) President Enrique Peña Nieto (2013, 2014, 2016, 2017) Bilateral Agreements Both nations have signed numerous bilateral agreements such as an Agreement on Trade (1975); Agreement on Tourism Cooperation (1978); Agreement on Cultural Exchanges (1979); Agreement on Technical and Scientific Cooperation (1990); Agreement of Cooperation in the Fight against Illicit Traffic and Abuse of Narcotic Drugs and Psychotropic Substances and Control of Chemical Precursors (1997); Agreement on Air Transportation (2005); Agreement to Avoid Double Taxation and Prevent Tax Evasion in Income Taxes (2006); Agreement for the Promotion and Reciprocal Protection of Investments (2009); Extradition Treaty (2012); Agreement of Mutual Administrative Assistance in Customs Matters (2013); Memorandum of Understanding between the Mexican Secretariat of Foreign Affairs and the Chinese Ministry of Science and Technology on Strengthening Cooperation in Advanced and New Technology and its Industrialization (2014); Agreement of Cooperation in Joint call on Research Projects on Science and Technology (2014); Memorandum of Understanding and Cooperation between the China National Petroleum Corporation and Pemex (2014); Memorandum of Understanding between the Mexican Secretariat of Economy and the Chinese National Development and Reform Commission for the Promotion of Investment and Industrial Cooperation (2014); Memorandum of Understanding on the Traceability of Tequila (2015); Memorandum of Understanding on Agricultural Cooperation (2015); Memorandum of Understanding for Electronic Exchange of Import and Export Certificates of Agricultural, Aquaculture and Fishing Goods (2015); Agreement for the Protocol of Phytosanitary Requirements for the Export of Maize from Mexico to China (2015); Agreement for the Inspection, Quarantine and Veterinary Health Conditions to Export Frozen Bovine Meat from Mexico to China (2015) and a Memorandum of Understanding on Cooperation in Industrial Property Matters (2015) (among others). Tourism and travel In 2014, approximately 63,000 Chinese citizens visited Mexico for business and/or tourism. Holders of Hong Kong passports and Macao passports do not need a visa to visit Mexico (mainland Chinese passport holders do