The marking "Hn 925 China" on a necklace indicates that the piece is made of sterling silver, as "925" signifies that it contains 92.5% silver. The "Hn" may refer to the manufacturer's initials or brand name, while "China" indicates that the item was made in China. This marking assures buyers of the metal's quality and origin.
The country code and area code of Changde- HN, China is 86, (0)736.
The country code and area code of Changsha- HN, China is 86, (0)731.
The country code and area code of Huaihua- HN, China is 86, (0)745.
The country code and area code of Jishou- HN, China is 86, (0)743.
The country code and area code of Loudi- HN, China is 86, (0)738.
The country code and area code of Xiangtan- HN, China is 86, (0)732.
The country code and area code of Yiyang- HN, China is 86, (0)737.
The country code and area code of Yongzhou- HN, China is 86, (0)746.
The country code and area code of Zhangjiajie- HN, China is 86, (0)744.
The country code and area code of Zhuzhou- HN, China is 86, (0)733.
The marking "10K HN" on a necklace indicates that the piece is made of 10 karat gold, which means it contains 41.7% gold mixed with other metals for durability. The "HN" likely represents the manufacturer's or designer's initials or a specific hallmark associated with the piece. This marking assures buyers of its gold content and authenticity.
HN stands for hemagglutinin neuraminidase, a protein found in some viruses.