8k=8*4. 166%=33.328%(333‰)
9k=9*4. 166%=37.494%(375‰)
10k = 10 * 4. 166% = 4 1.660%(4 17‰)
12k = 12 * 4. 166% = 49.992%(500‰)
14k = 14 * 4. 166% = 58.324%(583‰)
18k = 18 * 4. 166% = 74.998%(750‰)
20k = 20 * 4. 166% = 83.320%(833‰)
2 1k = 2 1 * 4. 166% = 87.486%(875‰)
22k = 22 * 4. 166% = 9 1.652%(9 16‰)
24k = 24 * 4. 166% = 99.984%(999‰)
Extended data:
First of all, we must choose a brand enterprise with good reputation, and never choose a brand-free manufacturer for cheap. The price of gold is relatively transparent, so beware of those that are obviously lower than the market price;
Secondly, when buying gold products, remember to ask for invoices, which is the core of protecting consumers' rights and interests;
Third, if in doubt, you can find it in time. The gold jewelry testing institutions under the national technical supervision department are located in major cities, which makes it easier to detect the composition of gold jewelry.
Fourth, choose to invest in gold products such as gold bars and nuggets, and choose regular merchants who promise to buy back, and the quality can be guaranteed.
The testing standards of gold products in China are very strict, and the supervision of regular merchants from raw material purchase to storage to processing and sales is generally standardized. The sales of investment gold bars of major brands and channels in China can generally be repurchased, but they must be damaged when repurchased, then sprayed with a musket, and the gold bars become "golden bumps", and then detected by gold detection equipment. If there is a problem, you will know.
Baidu encyclopedia-gold