I would like to know what're yr favorite ways when you lookin' for some products or suppliers? For instance: If you would like to find a t-shirt supplier, what're your favorite ways to find it out? I'll give you some ways here, you can choose your ways from them or just tell me yr ways.
Both Lucy and Lewis are correct. Referrals from others is the best but ultimately your lowest priced vendors are going to best. Get some references for vendors and contact them. See what they can do as far as pricing and make your decision from there. Some get better pricing than others with diferent vendors, so whats goot for john might not be good for you.
a nice list of vendors and industry info can be found on the Industry Links page of www.usscreen.com
If it's local - face to face from the phone book and from referrals and anything else I just use the search engines and start making calls to companies to find out the information I need.