Research, development, production, sales, and installation of traffic safety facilities, guardrails, aluminum alloy products, flower racks, flower boxes, flower pots, signs and signboards, steel structures, traffic booths, and garden tools; sales and installation of trash bins, landscape lights, vehicle parts, building materials, plastic products, metal products, and fiberglass products; design and construction of landscape lighting projects, bridge decoration projects, landscaping projects, and municipal road projects.