Guoyao aluminum company developed and manufacture the alumium extrusion profile for 12 yeas . We have 200workers , 5 production lines , 10 engineers , 4 QC to make sure higher quality and high production capactity .We have the certificest including OHSAS/8001:2004 . ISO14004:2015 , GB-T19001-2016-ISO . and have two kinds of professional machine to test the material functions before shipping . we assurance 98% quality production.We exported to more than 40 countries in last 10 years. We are your reliable partners now and in the future .