At that time, the company wanted to carry out a product, which was very important, and then the company arranged me to the customer's place to exchange specific products, workflow, preliminary work and so on. There is no difference between the content and the business matters discussed in general business trips. But the company still requires me to sign a training agreement, and it also comes with a confidentiality agreement. )

In this case, the signed training agreement is valid, and you don't have enough evidence to prove that you didn't receive training. The cost of sending you out for communication is paid by the company, and the content of communication may also involve trade secrets.