... ,excellent service 2,Good workmanship 3,good performance aluminum residential window Materialaluminium profile,.thermal break profilesStyleAs order( ... 5mm,5+6A+5mm,etcsurface treatmentoxidation,electrophoresis painted,mill finish,powder coatedAccessoriesMade in China / Germany( Roto, Germany Siegenia, ... CertificatISO9001:2008More detailed information, please contact us aluminum residential window