I don't think that there is going to be serious impact to trade between Taiwan and China. It's not in China's best interest to cut off trade.
Because if China decided to use force it is not only exercises, it is not bluffing, it is not intimidation. It is a decision to use force to damage Taiwan, and make Taiwan to come to the negotiating table with China.
The number of missiles has been steadily increased. In another 2 to 3 years, Beijing will deploy another 500 to 600 missiles. So definitely Taiwan is under tremendous threat and pressure,