We bought some propane tanks a few years ago from Apollo and had two more re-certified for another 10 years of use. When we went to refill them a couple years later the company we went to would not refill as they were not properly stamped. Apollo had put the re-certifiation mark on the tank rather than the collar. We called Apollo to work out how they would rectify the situation and they ignored us. I wrote the owners and finally got a response to bring the tanks in. That is not so easy as we live more than an hour and half away. We had already hauled them once when we could not get them refilled but we loaded them up again and went to Apollo. They put a sticker over the marks on the tank so anyone filling in the future could not see their mistake and re-stamped them on the collar. They treated us with disdain and rudeness the whole time, like we were bothering them. These tanks are not cheap and neither is recertification, they messed up, cost us two days, a bunch of gas and we dont think the new place will fill them as they are. If you are looking for safety and integrity in a business this is definitely not the place to go. read more