JTF means that the bracelet is made of cloisonne, which is called cloisonne bracelet, also called enamel bracelet. Cloisonne bracelet, as an artistic handicraft, began in Jingtai period of Ming Dynasty. When it was first established, it was only blue, so it was called cloisonne.

Cloisonne bracelet adopts cloisonne technology, and the bracelet made by cloisonne technology has the same effect as cloisonne fitness ball. Now cloisonne bracelets are mostly made of crystal.

Extended data:

Distinguish the authenticity of cloisonne

First, at first glance: Because the glaze of cloisonne is inorganic, the surface is as cold and hard as crystal glass. Cloisonne imitation is an organic substance, soft in nature, greasy and plastic in surface luster. Most of them are made of resin.

Scraper: Scrape the surface with a small blade. Cloisonne enamel is hard and difficult to scratch, while resin imitation cloisonne is easy to scratch.

Third, acupuncture: after the needle tip is heated or burned red, drill a thorn on the enamel surface of cloisonne. Cloisonne-like enamel surface is easy to be pierced, but the real cloisonne enamel is intact.

Fourth, ironing: burn the burning cigarette butts on the enamel surface of cloisonne. The enamel surface of imitation cloisonne is not fire-resistant, and the surface will leave hot marks, while the enamel surface of real cloisonne is not damaged at all.

References:

Baidu Encyclopedia-cloisonne bracelet

References:

Baidu encyclopedia-cloisonne