advantages: 
1. made of virgin material and environment conservation products: leaf mold-resistance and technical antibacterial processing. 
2. pvc one-off knife coating products
3.100% pure pvc wear-resistant coat, so it has the longest life in congeneric products. 
4. quality warranty period is six years and service life is as long as ten years. 
5. good mobility, anti-aging, water-proof, fireproof, slide-prevention, and be able to endure acid & alkali. 
6. easy installation and maintenance.