Code point
U+FF20
Glyph appearance depends on your fonts.
U+FF20
Po<wide> 0040U+FF20 FULLWIDTH COMMERCIAL AT is a Unicode 16.0.0 character in the Other Punctuation category. It belongs to the Halfwidth and Fullwidth Forms block.
Choose the representation you need, then copy its value.
U+FF20
65312
@
@
EF BC A0
FF20
0000FF20
%EF%BC%A0
\uFF20
\uFF20
\uFF20
\FF20