1. Top Optic Crystal(K9) 2. Prompt Delivery 3. Meet EU standard 4. 20 years OEM experience Crystal selected trophymaterial :k9 and k5(k9 material is better than k5material ).color : transparent , blue , red , green ,purple ,gloden yellow , amber ,pink ,ect.size :any size of items with thickness between 5mm-200mm ,length shorter than 1000mm,and width less than 300mm can be coustomized.work :entire ...