On-site and off-site fund codes are the same. On-site refers to the place where fund shares are subscribed, purchased, redeemed and listed through the member units of the exchange and the trading system of the exchange. Off-exchange refers to fund sales institutions and places that handle subscription, purchase and redemption of fund shares through their own counters or other trading systems without going through the exchange trading system.

Coding principle of listed fund code in stock exchange: the product code of listed securities investment fund in stock exchange is 6 digits. The first two are Shenzhen Stock Exchange Index Funds, namely 15, 16 and 18. 50,51,52 is the Shanghai Stock Exchange Fund. Usually, the securities investment funds listed on the Shanghai Stock Exchange use the first 6 digits of 50 ~ 59 for coding; The code of securities investment funds listed on Shenzhen Stock Exchange is the first 6 digits of 15 ~ 19. (Source CSRC official website Securities Investment Fund Coding Specification)