About the "Three No Products": According to the Product Quality Law of People's Republic of China (PRC), there must be Chinese factory name, Chinese address, telephone number, license number, product identification, production date, Chinese product description, limited qualitative or suggestive description when necessary, etc. Anything missing can be regarded as unqualified. There is no "three no products" in the series products of Yishengkang Sound Wave Tongluo Health Instrument.

For example, LW- 103 portable intelligent acoustic communication instrument, the product brand logo is Yishengkang, and the manufacturer entrusts Hanwang Manufacturing Company, and Beijing Zhengshi Tongkang Technology Co., Ltd., a subsidiary of Beijing Zhengshi Tongtai Technology Co., Ltd., is responsible for supervision. Zheng's Tongtai Head Office has the exclusive distribution, the national 400 service telephone number, the production date, the certificate of approval and the instructions for use are all in the box. They are all normal operations, reasonable and legal, and there is no so-called "three no products".