our group is mainly dealing with Copy Papers, they inlude:
By Size
A4
210mm*297mm?standard size?

8.5?*11?(letter size),

8.5?*13? (government size),

8.5?*14? (legal size)

A3
420mm*297mm?standard size?

11*?17?

By Brightness
92-96%,(grade C)

98-100%, (gradeB)

102-104% (gradeA)

Standard:
70GSM,75GSM,80GSM

Should any of these terms interest you, please let me know.