Which bank's department do I have to approch?

Hey everyone I hope y'all are doing fine. So long story short my family runs a business of LED TV assembly. I was at bank the other day and saw an outdated product. I know I can improve and produce a finer version of it easily. But Even if i develop a prototype I want to know which Bank's department do i need to approach to pitch in the idea and send my proposal to.

2 months back We also developed a new product but marketing of it was easier since we were able to trace the main distributors in Punjab.

If a Bank employ is reading this. Please do guide me a little.

Thank you for reading this.