Luoyang Industrial and Commercial Diamond Huang Jincheng is a large-scale comprehensive jewelry city with gold, platinum, palladium, diamond jewelry and natural jadeite as the main products, with a business area of 300 square meters. Its brands include: Shanghai Old Temple, Luoyang Yin Hui, Beijing Daimengde Great Aunt Bank, Shenzhen Ji Meng, Hong Kong Jiafu, Hong Kong Futaixing, Japanese Zhixie, Shenzhen Jing Rui and other well-known brands, and it has been rated as an honest unit in Henan Province and an honest business unit in Luoyang City.