This set of relief is the nine words of Taoism proverbs, every word is a special word mana, Japanese ninja nine word motto is from here. Is a typical Chinese style of relief. Inside a set of nine relief respectively corresponding to the nine words proverbs. There are OBJ format, there are RLF format. RLF format is a lossless relief format for ARTCAM. Can be directly used to CNC engraving. File is relatively large, all of the compression package.