1-Clear glass bottles:50ml 2-Material:soda-lime glass 3-Color:Clear and amber 4-Certification: ISO 9001:2000;ISO 14001 We are the manufacturer of the clear glass bottles for essential oil,the bottles range are from 5ml-200ml,we have1000 employees and the ISO 9001:2000; ISO 14001:2004 management certification,we are sure we can provide best quality&price,now the products are export 50 countries.