1. Competition, training venue class:
Football field, tennis court, hockey field, golf course, baseball field, gate court, basketball court, volleyball court, badminton court, runway, softball field, etc.;
2. Leisure activities:
Comprehensive venues for plazas, schools, kindergartens, venues, fitness and entertainment venues;
3. Greening class:
Green decoration of roads, residential quarters, exhibition halls, roofs, courtyards, parks, etc.