The trading hours of precious metals in Industrial and Commercial Bank of China (ICBC) are similar to those in other banks, and may vary according to regions and specific businesses. The following is a common precious metal trading schedule:

1. Spot trading of precious metals: Usually 9: 00 am-3:30 pm (Beijing time) on weekdays, some banks may provide longer trading hours.

2. Deferred trading of precious metals (T+D): It is usually from 9: 00 pm on weekdays to 2: 30 am the next day (Beijing time), and some banks may provide longer trading hours.

3. Precious metal futures trading: It is usually from 9: 00 am to 3:00 pm (Beijing time) on weekdays, and some banks may provide longer trading hours.

Please note that these times may be adjusted due to different banks, regions and market conditions. Before trading precious metals, please be sure to consult ICBC or check the latest trading schedule on its official website. At the same time, when trading precious metals, please pay attention to the potential risks and make sure to understand the relevant markets and products.