Characteristics of grass for courtyard and garden: 1Good and stable UV-resistance and suitable for all weathers. 2Convenient paving, and no need for other maintenance after first investment. 3Good smoothness, and small possibility of scratch when contacting the grass, and no static reaction after long time of friction with the grass. Characteristics of afforestation grass for tree root ground 4Natural appearance and it is same as the natural grass visually, which brings people a feeling of going back to nature.