According to the national regulations, it is necessary to have a steel seal to show this information, but it is not by steel seal to judge whether it is true or not. Therefore, in order to confirm the authenticity of this stuff, it must be sent to the local authoritative jewelry testing institution or technical supervision bureau for testing. You can call 1 14 for consultation.
Extended data:
Leofoo Jewelry has an independent product research and development team, a large diamond inlay processing factory, and is famous as an "inlay expert" in the industry. Adhering to the product tenet of "Simplicity can reflect the artistic soul" and the quality concept of "Every product is a fine product", Leofoo Jewelry pays attention to the meticulous products and exquisite craftsmanship, and is committed to making every product exude the unique artistic charm, so that every customer who owns Leofoo jewelry can also feel the charm at the same time.
Leofoo Jewelry has a product research and development team and a diamond inlay factory, and enjoys the reputation of "inlay expert". Leofoo Jewelry adheres to the product tenet of "simplicity can reflect the artistic soul" and the quality concept of "every product is a fine product".
References:
Baidu encyclopedia Baidu encyclopedia? Leofoo