JJ Slot Cars

I was surfing the net when I found this interesting slot cars producer, a chinese company named Jin Jun toys .
If we check some of their slot cars sets the boxes are amazingly close to ??? Yes, maybe they built them in China for the Euroepean company and now they are using the know-how. Has anybody tried them? how do they work? I´ll try to get a set and post about it.

From their webpage:" Taking Quality and Innovation as the best marketing means, we strive to supply to all clients with hot-selling products.

Jinjun Toys Factory established in 1996, specialised in manufacturing B/O toys and R/C toys.

Since year 2000, we have been focused on the Slot Racing Car items. So far we have developed a wide range of Slot Racing items covering scale 1:32, 1:43, 1:64, with almost all kinds of vehicles such as Rally Car, F1 Car, Motorbike , Quad Bike, Kart, Truck, Off-road Car, City Car, Police Car."