Our advantage lies in the use of advanced production technology and high-quality raw materials to ensure that every door and window can meet strict quality standards.
We offer a variety of opening methods ( sliding, casement, tilting, etc.) to meet different space requirements. Each type is carefully designed to ensure the best user experience.
It has excellent sound insulation and thermal insulation properties, effectively blocking external noise and improving living comfort.
All doors and windows are equipped with high-quality hardware to ensure their durability and safety. Each accessory has been strictly tested to ensure its stable performance.
The use of new insulation materials and thermal insulation technology greatly reduces heat conduction, making Grandsea's aluminum alloy doors and windows far superior to its peers in terms of energy saving.
Cases of whole-house procurement in the United States
Thermal break bi-folding glass door
16x9 feet customization of wood like aluminum garage door
Dark grey aluminum roller shutters
Cases of whole garage door procurement in Canada
16x7 green color colpay steel garage door
Production base
Production experience
Exporting country
Customers jointly choose
