Research and development and sales of flood control materials, fire equipment, water rescue equipment, civil defense disaster relief materials, forest fire prevention equipment, assault boats, rubber boats, mining explosion-proof equipment, flood control pile drivers, hydraulic power station pile drivers, pile cutters, pile pullers, flood control sub-dikes and cofferdams, diving equipment, sonar life detectors, drones and supporting equipment, underwater and above-water rescue robots, fire-fighting robots, amphibious hovercrafts, flood control sand filling machines, drainage rescue vehicles, security and protection equipment and systems, electric power and electrical tools; research and development, sales and installation of traffic equipment, instruments and meters, training equipment, communication equipment, electrical equipment, electromechanical equipment, hydraulic equipment, environmental protection equipment, water purification equipment, mechanical equipment, solar equipment, pole anti-collision facilities, special equipment, manhole cover anti-fall facilities; research and development and sales of water-absorbing expansion bags, sandbags and gunny bags, flood control and flood prevention boards, amphibious all-terrain vehicles, rescue and emergency crawler equipment, emergency and flood control kits, rescue ropes, long-range and short-range life-saving throwers, power generation equipment, drainage pump trucks, outboard motors, marine equipment, fire vehicles, emergency lighting equipment, optical instruments, self-expanding rescue boats, fire distress signalers, self-righting rescue boats, rescue air cushions, demolition tools; research and development and sales of emergency command intelligent systems, water conservancy intelligent systems, computer software; sales of labor protection hardware, tents, shoes and hats, rubber and plastic products, outdoor equipment, wood and wood products, clothing and accessories, textiles and knitwear, luggage, geotextile non-woven fabric, iron wire and products, plastic and woven products, fiberglass products, identification signs.