First of all, let's talk about the nature: Huatai Securities is a brokerage firm, and Tian Tian Fund is a fund sales organization. Both companies are authorized to sell 1607 16 funds in harvest fund in nature. There is essentially no difference between buying funds from these two places. So when is the difference? It's just that you need to buy from a brokerage firm when you buy an on-site fund, but Tian Tian Fund can't buy it.

Then let's talk about the rate, price and arrival time:

The standard of the rate is set by each sales agent. Tian Tian funds generally get a 10% discount (0. 12%). Huatai Securities needs to be confirmed according to your account rate in Huatai Securities. Generally speaking, the rate for securities companies to buy funds is higher, because the discount is small or even non-existent.

The buying and selling prices are unified real-time prices, and there is no difference.

The arrival time starts from the redemption date, T+ 1 confirms the redemption, and T+2 arrives, which is the same.

So I suggest you choose an institution with a low rate, and the others are no different. I hope it helps you.