Oki Social 1 I brought two of this and one has the wrong parts, which makes it useless. The wood is untreated and molded. External damages on the woods are visible everywhere, although they don't affect the structure and stability. Overall it's a poorly made product. The actual product does not match pictures. The photo has two support bars connecting the back leg and the mainframe, whereas the actual product only has one supporting bar. The instruction is written in Chinese and it's not helpful at all. One wrong move and you could have ruined the whole thing. Come on you're selling this in Japan! Don't even bother to encourage Japanese instruction?