Ningbo Oulai Building Hardware Co.,Ltd. is a manufacturer specialised in the door and window Accessories.Through the development for years, now the company has the quality production and scientific research,testing and examining equipments.
Ningbo Oulai Building Hardware Co.,Ltd. is a manufacturer specialised in the door and window Accessories.Through the development for years, now the company has the quality production and scientific research,testing and examining equipments.