Pulcon’s machines are nearly a hundred yuan more expensive than ordinary machines on the Internet. The main reason is that they have reached the first place in sales through credit card, and their profits are even more impressive. Normally Not to mention that it is more expensive than others, but another inside story is that Pulcon applied for a trademark for an individual, and it was manufactured for him by a company in Pudong, Shanghai. The internal core component RO reverse osmosis membrane is recycled, cleaned and reused. Yes, so its cost is very low. A pure water machine sold online may earn a profit of more than 200. To avoid recycling the RO membrane, the confirmation method is to test its TDS value after making water. If it is greater than 30 or even higher, everyone will Note that of course not all machines use recycled film, but you still have to be careful about the ratio here.