Japan's Baosidao can be traced back to 1919, formerly known as Takehara Co., Ltd., and the production of automotive supplies began in 1968, and was officially renamed Baosidao in 2008, and currently has a full range of self-produced products, producing more than 500 kinds of automotive supplies. Prosway has two factories, one in Aichi, Japan, and the other in Shanghai, China, where Prostow's rain protection agents are also manufactured.
 
Bao Sidao's anti-fogging agent is a 230 ml spray, the unit price is about 28 yuan, the failure rate of the nozzle is relatively high, although the official indication of the aging is about 1-2 months, but in fact it is only a few days at most, if the fog is relatively large, there will be blurry water stains on the glass, affecting the line of sight, compared to their rainproof agent, the quality is a little worse.