In ancient times, through the Silk Road, China's silk spread to Europe, but also brought silkworm, silk craft. In the 17th century, European scientists pointed out that the silk alone can no longer meet the needs of people wearing. In 1664, the British biologist Hawk conducted a careful study of the physiological structure of the moth butterfly insect and concluded that it is entirely possible that humans could produce artificial silk. France's natural scientist Bo Weng raised a large number of spiders, after repeated experiments and found that the spider's silk is it to the stomach of mucus sprayed into the air condensation. So, he cut off the spider's abdomen, remove a lot of mucus, manually drawn into filaments, making the world's first pair of "rayon" gloves. But this pair of gloves are thin and crisp, and can not be touched by water. In 1891, the British chemists Cruz and Bevan found that raw materials such as wood, reed and bagasse contain a lot of cellulose as cotton, and they can also be used to make mucus. In 1905, the United Kingdom built the first mucilage fiber factory, began producing man-made fibers, in our country called it "mucus." In 1930, the German Professor Staudinger discovered the structure of the natural fiber of cellulose, and confirmed that under certain conditions, the small molecule will be polymerized into fiber. This small molecule polymerization of fiber, is synthetic fiber. Later, many do not take natural products as raw materials, completely synthetic fibers one after another invented and put into production.
Jewelry Findings is an old world term used to describe the components which go into the making of jewelry, and includes items such as clasps, earrings, crimps, and Metal Beads. At JewelrySupply we carry a wide variety of jewelry findings in 14k gold, sterling silver, gold filled, copper, pewter and base metal. JewelrySupply sells only the highest quality jewelry findings, so you can be confident you are buying the best.
Jewelry Finding,Ball Magnet Buckle,Lobster Magnetic Clasp,Jewelry Making Buckle
HAPPYMAX INDUSTRY LIMITED , https://www.happymaxcn.com