I want to ask if you make posters or banners. It seems that you didn't make it clear whether the poster should be printed or printed by the printing machine! And the banner is made of cloth, not a tape machine! This is not a concept, what's more, there is no poster in China that can print 3m by 6m, nor in the whole world. You should be talking about inkjet printing or photographing (photographing is not that big, it seems that the largest size of self-adhesive PP paper is 1520mm).

Solution:

1, AI is vector software, that is to say, no matter how small the object in the file is, it will not be distorted when magnified by 1000 times, so you can make the file smaller accordingly! For example, 3*6m can achieve 30 * 60cm! Then the resolution is set to 300 when exporting TIFF format! Because the resolution of inkjet printing is 80!

If you really do printing, you can't do the whole picture. It can only be cut by hand (note that folio is the biggest), so it is necessary to cut 3*6 meters into a corresponding number of folio sizes. Narrow down the premise and print a sample! It seems that the printing cost is estimated to be sky-high! The machine fee for opening a single board is 200 boards, and 60 240 printers generally pay 200 paper fees, which is 3*6M of a board. It is estimated that there are dozens of modules.

3, that is, banners, not to mention the reduction of songs, the resolution of outgoing (source files) is improved, and the length and width are shortened proportionally. ....