On the panel of the standard light source box, we can see many types of standard light sources, among which the more common ones are standard A light source and U30 light source. Many users do not know much about the difference between these two light sources. This article introduces the difference and application of standard A light source and U30 light source.

For porcelain products, bright color is an important sensory basis for consumers to choose porcelain, which can give people a good visual experience. Generally speaking, the better the color of porcelain, the higher the gloss; otherwise, it is low. So, what are the requirements for porcelain gloss? How to measure porcelain gloss? The following is an introduction.

The gloss of the fruit surface can directly reflect the freshness of fresh citrus fruits and is one of the important indicators for evaluating the appearance quality of citrus fruits. The traditional citrus peel gloss test mainly uses the visual method, which is affected by many factors. This article introduces the application of three-angle gloss measurement in citrus peel gloss measurement.

Applying a layer of paint on the surface of wood not only protects the wood but also enhances the aesthetic appeal of its appearance, attracting consumers\' attention. If the color of the wood paint is inconsistent, it will affect the user\'s visual experience and, consequently, the product\'s sales. The prerequisite for ensuring the accuracy of paint color is the precision of paint color matching. This article introduces methods for matching wood paint colors.

In the gravure printing industry, color difference control is one of the key factors to ensure product quality and consistency. For packaging paper, accurate color reproduction is not only related to the aesthetics of the product, but also directly affects consumers\\\' purchasing decisions and brand image. This article briefly introduces the measurement method of color difference of gravure printing packaging paper.

D50 and D65 are two commonly used artificial sunlight simulations in standard light boxes. They play an important role in simulating natural light lighting effects, especially in color evaluation and printing industries. However, the printing industry generally uses D50 light sources, and rarely uses D65 light sources. So why do we use D50 for printing color matching? Can D65 replace D50? The following is a brief introduction.