Usually, one furnace has an air volume of 2000 and two furnaces have an air volume of 4000. The effective price is around 5000, and the purification rate is above 98%. Ordinary is around 500, which has no practical effect.
The kitchen lampblack purifier is a device integrating lampblack and purification, which not only simplifies the purification process, but also purifies lampblack more thoroughly! Because the specifications and sizes of kitchen fume purifiers are different, the prices are also different.
The price comes from the internet, for reference only!