The national standard is three 9, only the gold bars have the standards of 9 and four 9. Even if the consumer's shopping ticket is clearly stated that it is "Football Gold", it is impossible to prove it through quality inspection, because according to the country's name for precious metals, "thousands of gold" is the highest purity of gold jewelry in national standards, and There are no relevant regulations in the standard. and with the existing instrument precision, even if the purity of the gold jewelry does reached 99.99%, the general testing agency cannot detect it. Pucting information: If according to the definition of the national standard, the gold is divided into the following types, and the minimum value of the purity is 375, 585, 750, 990, 999. The corresponding purity of the corresponding purity is: 9K, 14K, 18K, 22K, foot gold, thousands of foot gold. For jewelry, the national standard is only defined to thousands of feet. The classification of the purity of gold, 3 9 are 99.95%of the purity, 4 9 are 99.99%, 999 is 99.9%of the purity, which is 18K; 999 represents the purity of gold, that is, a thousand enough gold, and the purity is 99.9%. The latter 9999 is commonly known as 10,000 -foot gold. The purity is less than that of thousands of gold. It is not much meaningful, but some merchants use some tricks to improve their performance and raise some prices slightly. 99.9%of the gold, the latter of 99.99%of gold, the gold content is 99.99%of the gold content, and the gold content of sufficient gold is 99.9%.
Gold is divided into 9K, 14K, 18K, 22K, 24K, and the corresponding content is 37.5 %, 58.5 %, 75 %, 91.6 %, and 99 %. 99 % of gold is called sufficient gold, and not less than 99.9 % of gold is called thousands of gold. When the gold content is 75 %, it can be easily added with different metal elements to become different colors such as white, yellow, blue, gray, and black, called K platinum.
Pay content for time limit to check for freenThere are three nine answers to gold, which is full gold. Foot gold is gold with a gold content of not less than 999, commonly known as three nine gold, and the mark is foot gold, 999 gold, GOLD999 or G999. There are 9999. There are 99999, but the gold content is not much different. Gold is a single form of chemical element gold. It is a soft, golden, and precious metal.nI hope my answer can help you
The national standard is three 9, only the gold bars have the standards of 9 and four 9. Even if the consumer's shopping ticket is clearly stated that it is "Football Gold", it is impossible to prove it through quality inspection, because according to the country's name for precious metals, "thousands of gold" is the highest purity of gold jewelry in national standards, and There are no relevant regulations in the standard.
and with the existing instrument precision, even if the purity of the gold jewelry does reached 99.99%, the general testing agency cannot detect it.
Pucting information:
If according to the definition of the national standard, the gold is divided into the following types, and the minimum value of the purity is 375, 585, 750, 990, 999. The corresponding purity of the corresponding purity is: 9K, 14K, 18K, 22K, foot gold, thousands of foot gold. For jewelry, the national standard is only defined to thousands of feet.
The classification of the purity of gold, 3 9 are 99.95%of the purity, 4 9 are 99.99%, 999 is 99.9%of the purity, which is 18K; 999 represents the purity of gold, that is, a thousand enough gold, and the purity is 99.9%.
The latter 9999 is commonly known as 10,000 -foot gold. The purity is less than that of thousands of gold. It is not much meaningful, but some merchants use some tricks to improve their performance and raise some prices slightly. 99.9%of the gold, the latter of 99.99%of gold, the gold content is 99.99%of the gold content, and the gold content of sufficient gold is 99.9%.
Gold is divided into 9K, 14K, 18K, 22K, 24K, and the corresponding content is 37.5 %, 58.5 %, 75 %, 91.6 %, and 99 %. 99 % of gold is called sufficient gold, and not less than 99.9 % of gold is called thousands of gold. When the gold content is 75 %, it can be easily added with different metal elements to become different colors such as white, yellow, blue, gray, and black, called K platinum.
Pay content for time limit to check for freenThere are three nine answers to gold, which is full gold. Foot gold is gold with a gold content of not less than 999, commonly known as three nine gold, and the mark is foot gold, 999 gold, GOLD999 or G999. There are 9999. There are 99999, but the gold content is not much different. Gold is a single form of chemical element gold. It is a soft, golden, and precious metal.nI hope my answer can help you