... ).Nontoxic,No harmless,OEM&ODM 4).Competitive price 20ml clear essential oil bottleProduction process1. Raw materialsSilica sand, Soda ash, limestone, and cullet ... strictly checked on Automatic inspection machine and visually inspect each bottle to confirm quality by skilled technicians8. Additional ProcessingA)Hot-End ... , and are stored in the warehouse or shipped. 20ml clear essential oil bottle