GB/T 18833-2002 Retro-reflective sheeting for road traffic signs

GB/T 18833-2012 Retroreflective sheeting for traffic control

JT/T 279 GB/T 2423.17-1993 Basic environmental testing procedures for electric and electronic products Test Ka:Salt mist GB/T 2423.17-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Test Ka:Salt mist GB/T 2423.17-2024 Environmental testing—Part 2:Test methods—Test Ka:Salt mist GB/T 3681-2000 Plastics—Test method of exposure to weathering GB/T 3681-2011 Plastics—Methods of exposure to direct weathering,to weathering using glass-filtered daylight,and to intensified weathering by daylight using Fresnel mirrors GB/T 3681.1-2021 Plastics—Methods of exposure to solar radiation—Part 1:General guidance GB/T 3681.2-2021 Plastics—Methods of exposure to solar radiation—Part 2:Direct weathering and exposure behind window glass GB/T 3978-1994 Standard illuminants and illuminating—viewing conditions GB/T 3978-2008 Standard illuminants and geometric conditions GB/T 3979-1997 Methods of measuring the color of materials GB/T 3979-2008 Methods for the measurement of object color