Abstract: A mobile fire fighting cart includes a platform, water tank, boost pump, turret, and a reel of hose. The water tank having water inlets for supplying water will supply water to the boost pump. Pressurized water by the boost pump will be supplied to fire hose, turret, or a reel of hose for putting off a fire. The wheeled platform having slots for forks can be moved manually or by a fork-lift truck, and can be received by a medium truck. The self-powered mobile fire fighting cart having functions of powered water supply, manual mobility, and availability of fire powder is such a reliable fire equipment with high mobility.

Abstract: A burglar proof liquid spraying device comprises a circuit board; a liquid bottle storing spraying liquid and high pressure gas; the spraying liquid will cause a person not to act in certain time period as the liquid is sprayed on a body of a person; the liquid bottle 10 has an opening and a metal tube is extended out from the metal tube; an electromotive valve connected to the liquid bottle for controlling spraying of the spraying liquid in the liquid bottle; a liquid guiding tube having a first end connected to the electromotive valve and a second end connected to a spraying head; an AC to DC convertor for converting high voltage electric power into low voltage electric power so as to provide DC current to the electromotive valve for actuating the electromotive valve; and at least one actuating button is connected to a joint on the circuit board for actuating the electromotive valve 14 to operate.

Abstract: A burglarproof spraying liquid comprising: water; cayenne pepper having a content of about 0.1% to 30% of water (weight percentage); mustard having a content of about 0.1% to 30% of water (weight percentage); natural nano-bacteriostat having a content of about 0.1% to 30% of water (weight percentage); emulsion having a content of about 0.1% to 30% of water (weight percentage); and potassium sorbate having a content of about 0.1% to 30% of water (weight percentage). The liquid of the present invention is harmless to human bodies, while a burglar sprayed by the liquid will strongly feel uneasy and thus be motionless for a longer time, thus therefore, other people can capture the burglar easily.