Shanghai Yuhua is a well-known soap factory with a long history. They pay attention to the quality and safety of products and adopt strict production technology and quality control measures to ensure that products reach high standards. Shanghai Yuhua's products have been tested and certified many times, and the quality is guaranteed. In contrast, the popularity and history of Shanghai sulfur soap in the market are relatively low. Although sulfur soap has certain antibacterial and skin care effects, the product quality and safety are relatively weak. Moreover, the production technology and quality control measures of Shanghai sulfur soap may not be as strict as those of Shanghai Yuhua, and there are certain quality risks.