There are many kinds of crystal products, and some people are speculative and skillful. How to distinguish true and false crystals has become a compulsory course for crystal collectors. This has collected some small knowledge about crystal identification for the majority o

Many of my first-time friends don't know what a black LED display is. What are the advantages of a black LED display? Generally speaking, the LED display with black light is more contrast, the color is softer, and the white balance is better. When the screen is not lit,

Ruby refers to corundum with red color. It is a kind of corundum. The main component is alumina (Al2O3), red is from chromium (Cr), mainly Cr2O3, the content is generally 0.1~3%, and the highest is 4%. How to estimate the weight of ruby: Round: diameter 2 × height Ã

The following is the main reason why Xiaobian introduced the impact of one-carat diamond price cuts for friends. We all know that diamond 4C affects the quality of diamonds, which affects the price. In 4C, the diamond cuts have the greatest impact on them. According to re

In recent years, the rapid development of China's underwear market, there have been many brands, aroused a lot of people's interest, in fact, many people do not understand the underwear channel sales model, even by the public familiar love, Sisi Princess , Embry and other big brands, many

The ceramic industry is one of the most traditional handicraft industries in China. However, with the advancement of science and technology, the industrialized ceramics industry has also seen a trend of modernization. Let's take a look at the article by columnist Chen Fan. The content

Autumn and winter have arrived, the beauty is not looking for all kinds of beauty it? A woolen coat in this season is essential, both warm and beautiful! Take a look at all the women in Europe Nina launched a good coat which single product it may have your heart Oh! Candy green sweater, with a

"Liang net" women's unique design concept, supplemented by related decorative techniques, ingeniously combined with the trend of elements, in line with the "free play, mix and match" fashion trends, fashion and leisure combined with fresh, free, personalized, trend-oriented

Ben Wang reported on November 22th that as the weather turned cold, our clothing gradually began to reveal winter breath. In this season, the most popular single item or sweater. The feeling of warmth and softness of the sweater is a favorite material for the winter. Not only the classic sweater s