Chang Tjer has been involved in manufacturing filter dust collecting system, portable dust collector, downdraft table, air filter, belt sander over 50 year experience. From 2011, Chang Tjer has our own brand “MEGATON“ to sell in Asia and worldwide. We want to introduce the good quality with great function machinery to all of our user helping them on their woodworking project. #MEGATONTOOL #woodworking #dustcollection #dustcollector