Pulling New Customer

I am in the business of distributing Brass and Bronze bars to elaborate screws and mechanical gears.

So far I have found and visit near 30 potential customers, but it required almost a month to do this.

I know that in the future it will not take more than a week and probably I will be able to visit them all once per week. However I don’t thing is good idea to keep buging my clients. I need to find more potential customers as well, and to find an appropriate way to keep awareness of my product/service along most of them;

Still need to keep on learning more of my industry.

If any of you guys know anything about industrial business please any comment is most welcome.