Landscaping engineering services; Construction of landscape and green space facilities; Municipal public works construction; Greening management, maintenance, disease and insect control services; Landscape architecture engineering design services; Project general contracting services; Contracting foreign projects; Engineering supervision services; Engineering and technical consulting services; Engineering project management services; Engineering and technological research and test development; Afforestation and cultivation; Water pollution control; Air pollution control; Selling saplings (except those prohibited by laws and regulations); Flower crops wholesale, southeast Asia nursery stock import and export business; Flower rental services, garden design and construction, etc.