“…5 See Mayer (2003), Kaplinsky (2005) and Razmi and Blecker (2008). 6 The products used include eight metals (aluminum, copper, iron ore, lead, nickel, silver, tin and zinc), seven non-food raw materials (cotton, jute, leather, rubber, timber, tobacco and wool), thirteen food products (rice, maize, wheat, sugar, bananas, soy beans, soy bean oil, palm oil, beef, lamb, swine meat, poultry and fish) and three beverages (cocoa, coffee and tea).…”