Complaint
| Product name | Oxygen concentrator |
| Voltage | 110V/220V |
| Size | 3 L |
| Oxygen purity | 90%±3% |
Q: How long is your delivery time?
A: Generally 3-5 days if the goods are in stock, and 15-25 days for products with customized logo/packaging
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample. Sample cost(not including freight) can be refunded after bulk order is placed.
Q: What is your terms of payment ?
A: Payment 30% in advance ,balance before shippment.
Welcome to contact us for more information of products and cooperation.
