It's ok to use it but not OK to sell it into the market, they wouldn't be able to open a shop and sell it in the EU. The Atom is a brilliant harness, they've honed it over many years and they seem to have a good quality control system as a company. I've used these many times and I'd recommend them for comfort. I was a Petzl fan until their most recent iterations but they're great products too. CMC are a global player so I'm a bit surprised to hear they haven't got the CE approvals yet.