Mr. Hieu's family farmed and planted gardens for economic development. Due to the frequent spraying of gasoline using a gasoline engine, he found that the machine caused environmental pollution, noises, fuel costs, so he was tired, and then he studied the manufacture of sprayers according to principles of using solar electricity to replace and save on gasoline fuel.

Mr. Hieu's energy sprays are lighter than gasoline spray propellants of 4 to 6 kg, operating according to the principle of using electricity from solar panels charged with batteries to recharge continuous operation for long time operation.

Currently, Mr. Tran Trung Hieu has opened a production facility at home and was ordered by many customers. This product is also awaiting the copyright, granted by National of Intellectual Property of Vietnam - Ministry of Science and Technology.