GB/T 21086-2007 "Building Curtain Wall" standard specifies the terms and definitions, classification, marking, general requirements, special project requirements, test methods, inspection rules, signs, Encasement, transportation and storage of building curtain walls. The standard applies to component curtain walls, unit curtain walls, double-decked curtain walls with Glass, Stone, metal plates and man-made plates as finishing materials, as well as all-glass curtain walls, point-supported Glass curtain walls, etc. Daylighting roofs, metal roofs, decorative curtain walls and Miscellaneous building curtain walls can also be used by reference. However, this standard does not apply to concrete panel curtain walls, exterior decoration systems where panels are directly attached to the main structure, and exterior dry hanging systems without supporting frame structures.