begin{longtable}{|p{7cm}|p{2cm}|p{2.5cm}|p{2.5cm}|}
caption{A listlabel{tab:list}} \
hline
Name       &    Company     &  Catalog Number   &   Comments    \ hline
a          &    b           &   123             &               \ hline
c          &    d           &   522             &     xyz       \ hline
end{longtable}