Material: PVC1. It is dust proof and comfortable to wear and tasteless. 2. It can prevent bacteria, dust entering the oral cavity and get rid of poisonnous gases and disgusting smells. More Product Features HS Code: 63079000 Trademark: HYKY Standard: CE Productivity: 10, 000/day Unit Price/Payment: 0.46usd/pcs Origin: China Packing: 600pcs/carton Min. Order: 50, 000 Export Markets: North America, South America, Southeast Asia, Africa, Mid East, Eastern Asia, Western Europe Company: Huanyu Kangyu Labor Protection Appliances Co., Ltd.