16k纸是多大a4纸与16k的区别

100张b4纸b4打印纸b5白纸b5复印纸a4打印纸a4白纸a5复印纸凭证纸

一折b4打印纸复印纸

b4打印纸复印纸 70g

120g白纸a4加厚a3b4b5大张全开4k8开a0a1a2合同标书喷墨激光白纸