JIS K 5600-7-7
JIS K 5600-7-7 specifies that UV degradation is accelerated by UV lamps to determine outdoor durability by comparing the occurrence of yellowing, chalking, and microcracks.
JIS K 5600-7-7 specifies that UV degradation is accelerated by UV lamps to determine outdoor durability by comparing the occurrence of yellowing, chalking, and microcracks.