China low cost aluminum sliding/casement doors/windows with high quality

Laizhou Hongshengda Machinery Co.,Ltd is one branch company of Laizhou Construction Group.Hongshengda With the registered fund of RMB 5,880,000 Yuan and the floor area of over 92,000 square meters.has 218 employees now, among which there are 105 employees with college degree or above, over 50 welders and 65 professional workers for manufacturing windows and doors.our main products are container house,prefabricated house,modular homes,steel structure building,metal shed,sec...