We live in Europe and bought the O3-Ellite ozone generator in mid-2019 following extensive research. Tobias at Promolife was very helpful and accommodating in the process of ordering, i. E. helping me to work out what items were needed. He was not pushy and did not try to persuade me to buy things I didn't need, or to upgrade to a more expensive model, and I give him full marks for that and hope his management reward him.
However, when the items eventually arrived (international shipping and customs clearance is very sloooow) the system was unusable because a small washer (cost: maybe 10 cents) was broken. I tried to find a replacement locally but none of them was able to make the air-tight seal necessary, and oxygen was leaking out at a high rate. I got in touch with Tobias and he sent out a new washer free of charge, but this again took a long time to arrive. The replacement washer makes a tight seal, but now I find there is an oxgen leak from the body of the flow regulator... so it's back to Promolife to see if there's a way of fixing this without having to send the part back to the States and wait for a replacement (but what happens if I accidentally damage the item while trying to fix it?). Both the washer and the flow regulator should have been checked by the QA department and/or the dispatch department, and this makes me wonder whether Promolife is just a small outfit that buys items in from other manufacturers, badges them and sells them on, relying on their suppliers to do the testing and QA.
In summary, it's five months since I placed my order and I still don't have a working product. Much of the delay was due to shipping and Customs, but a fair bit was due to defective parts that should have been checked before they were sent out. This is very disappointing and I would caution potential customers about this.