According to the "Xijing Miscellaneous Notes", the Han court made a "tiger son" from jade, which was held by the emperor's attendants for the emperor's convenience at any time. This kind of "tiger son" is the special utensils called toilets and pots by later generations, and it is also the predecess... read more
The flushing principle of toilets on the market today is basically two categories: straight-flush and siphon. The siphon is divided into vortex siphon and jet siphon. read more
Please look forward to more automatic water level controller