air venturi specifications Installation and application Other mixing devices Packaging A) Inner layer: plastic bag B) Middle layer: EPE(Expand aple poly ephylene) C) Outer Layer: carton/composite wooden cases Prompt delivery 1. 3-7 days for portable ozone generator order; 2. 10-30 days for industrial/middle size ozone generator order; 3. Shipping could be courier, airline or sea. Payment terms About US We Provide high-quality ozone&oxygen generator for: Ozone&oxygen generator wholesalers Retailers and oneline shops (Ebay, Amazon...) OEM-The custom-made ozone generator are available. Upon customer's idea, drawings, photos etc. ODM-The modification of the ozone generator after customer's selection is accepted. Excellent after-sales service: 1 year warranty again the manufacture defect, offer life time consultation on problems occurred. 2M silicone tube and 2PCS air stone gift for any ozone machine order. Report on the making process. Marketing feedbacks tracing. Tips: Some models available with 220V/380V are available, when you make order pls kindly note us the voltage you need, thanks a lot!