Stainless steel screws buy inquiry from Georgia

I have several questions for you if you do not mind about products of your company:
1. What is the difference between perforated and smooth perforated?
2. Is it possible to cut the sheets exactly in the sizes indicated by me and purchase it like that or are your sheets standard size?
3. Do you have stainless steel female screws and clinchers? (external and internal screws)?