Summary: FOCUS GX-750 added to product list

Why It Matters: This shows a new product is available.

What Changed:

• The product name "FOCUS GX" changed to "FOCUS GX-750" in one place.
• The text "please leave it empty." was added at the very end of the content.
• The heading "Seasonic PC PSU Technological Features" changed to "PC Power Supply Seasonic Technological Features".