1. Huapu Gold is a relatively new brand. In order to be famous in the market, they may be inclined to set more competitive prices.

2. Huapu Gold may have adopted a more efficient operation mode and reduced the cost, thus providing lower-priced products.

3. It may also be that Huapu Gold uses gold raw materials different from other brands, which reduces the cost, so that it can make more competitive prices while ensuring profits.

The above is only speculation, and the specific reasons may require consulting more information or asking relevant people.