How can you make the $<$, and $\leq$ signs bold?

Question

How can you make the <, and the $\leq$ signs bold?

Thanks,

Answer 1

\documentclass[border=1mm]{standalone}
\usepackage{amsbsy}
\begin{document}
$ \leq \boldsymbol{\leq}  < \boldsymbol{<} $
\end{document}