http://www.bblm.go.id/index.php/news/178-seminar-simulasi-las-alat-soldamatic-kerjasama-b-b-l-m-dg-pt-esindo-karya-lestari
http://www.bblm.go.id/index.php/news/178-seminar-simulasi-las-alat-soldamatic-kerjasama-b-b-l-m-dg-pt-esindo-karya-lestari
