How much is Changhong oxygen concentrator zy-602

Family members secretly bought a so-called Changhong home medical grade oxygen concentrator, said the market price of 12,800, and now cost 5980 yuan ocean, accompanied by a broken (online stores can not be found) Changbaishan laser therapy instrument costs more than 4,000, as well as two boxes of candy.

Then the door boy said to introduce four or several customers to them, all costs can be refunded, the equipment when the free gift. The first thing I'd like to talk about is the fact that I'm not a big fan of the idea.

Calming down can not help but want to ask →_→

1, Changhong has entered the field of medical equipment development? Do you have the relevant operating qualifications?

2, if 1 is valid, then why would a company like Changhong get involved in high-priced medical-grade products in the first place? Are the market risks as well as their own capabilities that reliable?

3, as a relatively large domestic brand, why does Changhong advertise such a high-end item only in the miscellaneous Anhui Province's Yishou Digest?

4, the outer box packaging of the manufacturing machine does not have the words medical grade from beginning to end, but it is labeled as medical grade in the instructions for use, →_→ as a publicity gimmick keyword, why hide it?

So, if you're not afraid of a pitfall, then you can try it.