Safety signs are to warn staff of the dangerous condition of the workplace or the surrounding environment, to guide people to take reasonable behavior signs. Safety signs can remind staff to prevent danger, so as to avoid accidents; when the danger occurs, can instruct people to escape as soon as po

In our daily life, people find that adding luminescent pigments to injection molding products can make them glow in the dark. In the early days, the production technology was not mature, and the finished products would have a high chance of blackening.

There is no universally accepted method for classifying pigments. The reason is that there are many varieties of pigments, their chemical composition varies greatly, and their uses are multifaceted, so it is not ideal to classify them by any method.

The phenomenon of fluorescence is a photoluminescence process. In this process, short-wavelength electromagnetic waves in the ultraviolet or visible wavelength band are absorbed and then released as long-wavelength electromagnetic waves. magnetic waves are absorbed and then released in the form of long-wavelength electromagnetic waves. The latter usually falls in the visible range and is superimposed with The latter usually falls in the visible range and is superimposed on the regular reflected light, thus revealing a dazzling glow color.