商海风行变色宋淑运变色书包为了提高儿童上学的兴趣，日本一家公司制成了颜色能随气温而变化且图案鲜明的书包。这种书包只要在阳光下曝晒一阵，或用热风机吹几分钟，书包上原本颜色的机器人、汽车构图就会逐渐变淡，甚至变成白色背包。变色娃娃美国推出一种涂有变色漆的... Business sea change discoloration Song Shiyun discoloration bag In order to enhance children’s interest in school, a Japanese company made a color can change with the temperature and the distinctive pattern of the bag. This bag as long as exposure to the sun for a while, or blowing a few minutes with a hot air blower, the bag on the original color of the robot, car composition will gradually fades, and even into a white backpack. Color doll United States launched a varnished paint ...