Some economists have welcomed China's decision to implement a 100% tariff-free policy for most African nations, effectively opening the world's largest consumer market to the entire continent without the burden of import duties. The move is expected to not only be  win for one or two nations; but a continental opportunity for African agricultural products, including the coffee hills of Ethiopia and the avocado orchards of Kenya. For a look at how this policy impacts Africa's position in the global food chain,  Tsepiso Makwetla spoke to Wandile Sihlobo, Chief Economist at Agbiz in South Africa and a leading expert on African agricultural trade and policy....