How. 2 Shanghai Enterprise Company Ltd. is a fast growing development company specializing in household electronic products.

Smoke Guider is the main product that has been painstakingly developed and warmly recommended by How. 2. It is also an award-winning invention with medals and awards being granted from Europe, America and Asia for its cutting edge technology.

The invention of Smoke guider brings solution to prevent diseases such as lung cancer, pneumonia, asthma, and bronchitis caused by hazardous gases, polluted smoke and greases. It is not only suitable for family use but also a lifesaver for those who come into close contact with smoke and grease in factories, laboratories and restaurants.