I've ordered from them a few times. Excellent service and very fast shipping considering the distance. I usually use their EMS service (Express) because I make sure my order size is worth it and I get product in about a week or so.
Overall quality I would give average. They back up their product if you have a bad piece... but it's not the top of the line. A very good value though considering the price.
For me their LR atomizers out of the box are fine -- but only last about a week before losing performance significantly (I am a heavy vaper too). For their price, it's decent. But my Ikenvape has been running on two months and still pumping out better vapor and flavor.
I hope that helps you. They are on my list of reliable suppliers. If they found a way to up the quality just a little bit, they'd be a 5 star for me. For spare
batteries, drip tips, no problems there. In fact, I just placed an order with them last week for some Ego
tank stuff to give it a try. I've bought some of these from a US vendor and the atomizers have failed miserably. For the price, it's worth a shot! I don't think you will be disappointed.