Hi Charltoc,
Welcome aboard the good chip cleanitup.
Your gonna need to be a bit more specific or you'll end up samples for every aspect of the w/c business.
Are you ladder or wfp ?
Are you just starting up or expanding ?
Give us a bit more and you'll be overflowing with them which means you can take the best bits of each and create a perfect one for your business.
If you need any help on anything else just ask - there's a great bunch of guys (and girls) on here all willing to share their expereiences.
Regards,
Sarah