About up to the use of modified rubber sheet!
You can buy Tamiya, also can buy domestic. TB also have that kind of division of all kinds of width, generally speaking, 1MM thickness board used the most frequently.
The price is almost the same, there is nothing particularly worthy of recommendation. Play mode, Qu Feng Tang, Shangzhi toys, roaming model, Qu Feng Tang, the KING model, they generally have a sheet, you see what love style!
