Kunming Gansheng is a professional appraisal center, providing all kinds of appraisal services, including cultural relics appraisal, jewelry appraisal, art appraisal and so on. Gansheng Appraisal Center has an experienced and professional appraisal team with profound professional knowledge and rigorous appraisal methods, which can accurately judge the authenticity and value of items. In contrast, the popularity and reputation of Yuntong Appraisal Center in the appraisal field is relatively low, which cannot be compared with Kunming Gansheng. Therefore, considering comprehensively, Kunming dry sound identification center is better.