Gelonghui, March 28 | Helen Zhe (300201.SZ) said on the investor interactive platform that the Helen Zhe high-altitude tethered drone fire fighting truck was recently developed and developed. High-altitude fire extinguishing is a worldwide technical problem, and this product provides a new solution to this world problem. The company's first product is targeted to meet the fire protection needs of high-rise buildings of 150 meters and below in large and medium-sized cities. Later, it will gradually form 120 meter, 150 meter, 180 meter, and 200 meter product series. The product is undergoing full-machine certification testing and testing, and marketing work has been carried out as planned. High-altitude fire extinguishing equipment is in high demand in domestic and foreign markets. It is expected that once this type of product is mass-produced, the market prospects are broad.