Looking to do grills for my condo..How do you find a reputable contractor? IMHO, word of mouth is the best (however, this way also not 100%. It wud have worked for others but not you if unlucky. But still better)

Anyone have used these guys? Like the invisible grille though. As long strong.
Door Window Grille
http://doorwindowgrillecontractor.com.my/D...a/#.VdEcOPmqqko

Wei Wang
http://www.weiwang.com.my/index.php?ws=our...le#openproducts