One power, Bosch is a German brand. Beretta is owned by Italy's Riello Group.

For the second price, Beretta is the cheapest, Bosch and Weineng are about the same.

Three configurations. Gas valve 1: Honeywell, Bosch, and Beretta are Hitt valves. (For the old Beretta, Bosch uses Honeywell. Its biggest feature is that it is pretentious and extremely expensive. If you don’t believe me, ask how much it costs to sell one.) 2 circuit boards; Vaillant Bosch is definitely better than Beretta. (If you look at the relay, the CHINA on the chip will tell you that the export is converted to domestic sales) 3 water pumps: Weineng is from Wilo, Bosch is a Bosch-specific Danish Grundfos water pump, and Beretta is branded with the Grundfos trademark. (Anyone who sells water pumps knows that one Grundfos is equal to two Wilos. The biggest problem with Wilo is that it gets stuck). 4 Sanitary hot water; Weineng uses plate heat exchangers, imported Bosch machines basically use casing heat exchangers, and domestic Bosch heat exchangers use plate heat exchangers. Beretta is the lord, Norman is the plate changer, and Qiao is the casing. However, Bosch has developed a turbine flow sensor which is very gimmick and is said to be able to make up for the lack of plate replacement. The maximum output quantity of plate type is generally 10-12 liters per second, and that of casing type is 17-20 liters per second. That is to say, the water output with large water output is flushed. (Plate replacement and casing have always been a war of words. In the early days, plate replacement was slightly better than casing. After 4 years, the three-way valve of plate replacement, plate heat exchanger is like the "lifeblood" of a man. Please maintain it well. The electromagnetic tee The valve mainly plays a switching role. The membrane inside the valve is subject to high temperatures of up to 80 degrees, as well as scale in the water. Do you want the result? If the relay outside is also CHINA, why bother? Take care of the foreign devils. What do you think about the distance between your wall-mounted heat exchanger and the bathroom? Can you wash it if it doesn't heat up to 55 degrees in winter? The heat loss to the shower head is 5 degrees. Think about it, heat exchange. , but the cold water is directly exchanged for heat. Do you think it can be replaced if the hot water side is not hot? 5. The air pressure switch is "fake". 6. Fan, Wei Neng Bosch. Absolutely good. 7 net weight; for the same imported machine, the Bosch Weineng is about 33 kilograms.

I’ll give it to you. He said. If you are willing to spend money on domestic products, buy Weineng. If you want to import and save money, there is an old saying that Beretta is the cheapest. "You get what you pay for." Things are dead, but after-sales service is alive.