Diff of IPX8

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.
• Go to IPX8.

- https://ja.wikipedia.org/wiki/[https://ja.wikipedia.org/wiki/%E9%9B%BB%E6%B0%97%E6%A9%9F%E6%A2%B0%E5%99%A8%E5%85%B7%E3%81%AE%E5%A4%96%E9%83%AD%E3%81%AB%E3%82%88%E3%82%8B%E4%BF%9D%E8%AD%B7%E7%AD%89%E7%B4%9A 電気機械器具の外郭による保護等級]