Can the transaction fee of Datong Securities be refunded?

You can't. According to the information of Datong Securities, the handling fee is not refundable. Handling fee: expenses incurred in the course of handling affairs. Datong Securities, formerly known as 1988, was established as "Shanxi-Hebei Inner Mongolia Monti Datong Securities Company" with the approval of the head office of the People's Bank of China. It is one of the earliest 32 securities companies established in the history of China securities. From June, 5438 to October, 2000, the company name was standardized as "Datong Securities Brokerage Co., Ltd.".