1, because this process requires professional skills and experience, it is difficult for ordinary consumers to master, and it is prone to damage or improper operation.

2. Enamel technology takes a certain amount of time and cost, and Leofoo Jewelry may think that it is not worth providing this service to every consumer. Leofoo Jewelry is a Chinese jewelry brand, founded in 1995. The brand is committed to providing consumers with high-quality jewelry products and services with the brand concept of "innovative design, exquisite craftsmanship, excellent quality and honest service".