Would it be considered cheating if I approach my clients that I made in my current job when I open my own business?

Hello everyone. Currently, I'm working in the marketing department in a manufacturing company and I have hundreds of clients that I've made for the last 5 years working for the same company, online ads expenses were paid by the company though obviously.I've managed to create nice and warm relations with most of the clients throughout my tenture here, and there's certain understanding, trust, and rappo between us.I'm preparing to quit my job and start my own business in the same field in the next few months. I feel it'll give my business a great push in the beginning itself with a handful of clients ready to give me work; the only thing that disturbs me a bit is that would it be considered if I approach my previous clients?Thanks in advance. see hubwealthy.com/wealthy