1. ISO9001-2008
2. GB/T24001-2004/ISO 14001:2004/ GB/T28001-2001

When selecting aluminium windows, we often pay more attention to the thickness of the aluminium profiles and glass. We often overlook the importance of the hardware accessories such as hinges, locks, handles, levers, etc. Without them, windows cannot be assembled and perform well and may lead to defects. In fact, our country has specified certain standards for aluminium windows. So, when selecting one, you should make sure that the thickness, strength and oxide film of the aluminium used for high-quality aluminium windows meet our national standards.