Certifications
KS Product Certificate (Insulating Glass)
KS Product Certificate (Heat-Strengthened Glass)
KS Product Certificate (Laminated Glass)
Group Standard Product Certificate (Gas-Filled Insulating Glass)
Trademark Registration Certificate
MAIN-BIZ Confirmation
Factory Registration Certificate (Factory 1)
Factory Registration Certificate (Factory 2)
Construction Business Registration Certificate (Metal Structures and Windows Works)
Construction Business Registration Certificate (Plastering, Waterproofing, and Masonry Works)
Construction Business Registration Certificate (Interior Construction Works)
