回复：请教： 我进这家公司会有麻烦吗？

unless you will use the the technique unique to the previous company, I didn't see any legal ground that they can sue you. If they want to sue you, they need to provide evidence and showcase the judge you violate the agreement. It's not convincing based on what you describe.

How could you let them know where you are going in the first place!!??