812 group of category 8. Registered chopsticks have a trademark of 85 partners. Chopsticks, which are commonly used in China, are usually made of bamboo, wood, bone, porcelain, ivory, metal, plastic and other materials. It is one of the common tableware in the world and one of the symbols of Chinese food culture. It was invented in China and later spread to Korean Peninsula, Japanese, Vietnamese and other Chinese character cultural circles. The shapes of chopsticks in China are mostly approximate cuboids or cylinders.