The historical status of Qingjin does not need to be blown. According to the "Cultural Examination of the Qing Dynasty": "The Emperor Chaozhu ornaments, only the Temple of Heaven uses lapis lazuli, the altar uses amber, the altar uses coral, the moon altar uses turquoise; the emperor faces the belt, which is decorated with lapis lazuli and altar. Topaz, the altar uses coral, and the moon altar uses white jade." The ancient Egyptian people like to paint the pharaoh's mask with green gold paint. Please ask Tutankhamun Pharaoh Town House~ Here are four brain teasers. If you are wrong, please go home and continue to consolidate the theory. 1. Question: There are two green gold in the picture below. Which one should I choose? Answer: The one on the left Color: Generally speaking, the deeper the color, the better the quality. But the color does not mean all. Can not only look at the depth, mainly depends on the saturation, and the degree of uniformity. In the figure below, the color on the right is dark, but the color is uneven and not saturated. Although the color is light but uniform, it is pure and pure. So the value on the left is high. 2, Question: The three green gold in the picture below, which one should be abandoned? Answer: The leftmost one White alloy: We can use white and gold to define the quality of green gold. Many materials will not have obvious white. The merchants say that they are white, but they are very uneven in color, poor in saturation and turbid in color. Therefore, it is also white, and the grade is much different. It needs to be combined with color and material quality. In the above picture, the three ring faces are white, but the color saturation on the left is obviously not comparable to the two on the right. 3, Question: The green gold in the picture below, a lot of gold, should not give up? Answer: Of course not! With regard to gold, one of the characteristics of the best old materials is that the color of gold is extremely bright and small, like gold foil on the surface of the green gold, such as star-studded, quite beautiful. Many people think that there is a small amount of this gold, it does not affect the quality, and it is very beautiful. 4. Question: Which of the following two figures is the old material? Answer: The one on the right The basic method for distinguishing old and new materials is that everyone knows that the new material is a sheet of material, a layer of white and blue, like pork belly, and the blue part of the old material is blocky. If you see a white or yellow layer on the finished product, it is simple, it is a new material. The above two pictures, the new material above, the old material below. Look closely, the color of the old material is painted like a brush with full of pigments. The color is thick and shiny, the color of the new material is dark, the density is slightly poor, and it looks dry. Let's summarize it. [Select Green Gold Trilogy] A look at the color: lapis lazuli in blue, rich, pure, uniform is the best, such as interlaced with white stone or white spots, it will reduce the color concentration, purity and uniformity. Second look at the texture: the texture of the green jade should be dense, delicate, no cracks, sparkling starlight. The local distribution of pyrite will affect the texture of the lapis lazuli jade, and the more obvious the crack, the lower the quality grade. Third look at the volume: under the same quality conditions, the larger the volume of the green jade block, the higher its value. FR Suits can inhibit the ignite prevent the spread of flames,keep away from the impact of high heat,and FR Suits can do almost immediately self-extinguishing after move away fire source.The other fabrics suits will be fired since the ignition point,flame spread quickly,and it is still on fire after move away the fire source, until it has been put out or flammable material is burned. FR Coveralls capable of preventing itself from being ignited or slowing and terminating combustion after contact with a flame or hot object.we produce FR Suits,FR Jackets,FR knitted t-shirt, FR Bibs are all certified. If you need Flame Retardant Fabric to meet certain FR standard, we can provide you relative FR certificate, and make sure the specific code which you received is valid. Sometimes, certified corresponding fabric may not be exactly what you need, but most important is the connection between us, and you trust us. Fr Suits,Fire Retardant Suit,Flame Retardant Suit,Fireproof Suit Xinxiang Xinke Protective Technology Co, Ltd. , https://www.coverallsuits.com