AJ does not mean gold, AJ is just a code of the product's product. The golden logo generally uses G, GOLD, foot gold, and AU is represented. So AJ does not mean gold.
It some common golden signs,
1, AU999, indicating that the gold content of gold is 999;
, AU990, indicating the gold content of gold 990;
3. GP, which means gold plating;
4. GF, which means gold;
5. Foot gold, which means that the gold content is 990 or more, and the gold content is 990 or more, and Foot gold 999 indicates that the gold content is 999.
AJ does not mean gold, AJ is just a code of the product's product. The golden logo generally uses G, GOLD, foot gold, and AU is represented. So AJ does not mean gold.
It some common golden signs,
1, AU999, indicating that the gold content of gold is 999;
, AU990, indicating the gold content of gold 990;
3. GP, which means gold plating;
4. GF, which means gold;
5. Foot gold, which means that the gold content is 990 or more, and the gold content is 990 or more, and Foot gold 999 indicates that the gold content is 999.