Hung Khoa Manufacturing And Trading Co., Ltd is a distributor of rolling doors in Vinh City, Nghe An, Vietnam. Hung Khoa is the official distributor of German technology rolling shutter doors, Australian technology seamless doors & directly importing and distributing other quality rolling door accessories.Hung Khoa Manufacturing And Trading Co., Ltd is a distributor of rolling doors in Vinh City, Nghe An, Vietnam. Hung Khoa is the official distributor of German technology rolling shutter doors, Australian technology seamless doors & directly importing and distributing other quality rolling door accessories.