Guotai CSI 3 Index Securities Investment Fund. According to the investment plans and activities released by China Postal Savings Bank in 28, it can be known that the regular fixed investment plan of "Cathay Pacific CSI 3 Index Securities Investment Fund" was opened in China Postal Savings Bank on April 1th, 28, and it was included in the promotion activities of regular fixed subscription of funds carried out by China Postal Savings Bank, so it is Cathay Pacific CSI 3 Index Securities Investment Fund. China Postal Savings Bank started its postal savings business in 1919, with a history of one hundred years. In March 27, on the basis of reforming the original postal savings management system, China Postal Savings Bank Co., Ltd. was formally established, and in January 212, it was restructured into a joint stock limited company.