... the first type is for European market ,the second is for Middle Eastern market ,the third is for African market .every ... has several grades .The history of manufacturing CTC black tea for WonFa has 18 years , it was called “tea ball ... cm or 0.8-1 cm which was used for the tea bag ,the diameter is 1.2-2cm ... ,which tastes strong ,brisk ,fresh . CTC black tea with good quality and good price(BTF WF5517)