GB/T 8478-2020 is the premier Chinese National Standard for aluminum windows and doors. Updated and implemented in early 2021, this comprehensive standard dictates the technical requirements, test methods, and inspection rules for the entire industry. It covers critical performance metrics including structural wind pressure resistance, air permeability, water penetration, and thermal insulation, setting a high bar for the structural integrity and energy efficiency of building envelopes.

The China National Accreditation Service for Conformity Assessment (CNAS) is the national accreditation body recognized by the ILAC MRA. This accreditation signifies that our systems meet international laboratory standards, ensuring that our technical data is accurate, reliable, and globally recognized across 100+ economies.