Because this place is closest to Hong Kong, Jinliufu and Chow Tai Fook have the most jewelry branches in Dongguan and Shenzhen, and the quality is the most guaranteed. Then there is the Diamond Family, which has many branches in Dongguan, Shenzhen, especially the products sold are guaranteed for life.

Advertising companies are everywhere. I wonder which one is famous.

You can't ask for contact information and telephone number in Baidu. As long as you go out into the street, you will find it.