It is very difficult to enjoy the cross-border e-commerce competition. Sponsored by China Business Federation, undertaken by Internet Application Working Committee of China Business Federation, and provided with technical support by China Communications Technology Co., Ltd., it has high gold content.
Gold content, the content (mass) of metal "gold" originally used in gold jewelry and gold products, is expressed by K, and the gold content per k (abbreviation of English carat and German carat, often written as "K") is 4. 166%. It is often used to describe the intrinsic quality of things.