1. Appearance: The appearance of the instrument is smooth and clean, without cracking bubbles, coating falling off, obvious scratches and other phenomena.

2. The equipment can detect at least 35 flammable and corrosive liquid dangerous goods, including gasoline, kerosene, diesel, hydrochloric acid, sulfuric acid, nitric acid, ethanol, acetaldehyde, paint thinner, rosin, isopropyl ether, petroleum ether, nitrate Several common dangerous liquids such as benzene. There is a clear and permanent product logo in the appropriate place. The content of the logo includes: the name and trademark of the manufacturer, and the product name and code.

4. The device interface is all Chinese and graphical interface, and comes with light source.

5. The equipment provides storage and retrieval of liquid test results, with a storage capacity of not less than 5000 tests;

6. After one charge is completed, the equipment can be used continuously for not less than 1000 times, and the continuous working time is not less than 8 hours.

7. The instrument is equipped with sound and light alarm and LCD graphic display alarm mode. The instrument can automatically reset after the alarm.