Where is the best natural whetstone produced?

According to the inquiry of Huinong. Com, grindstones are produced all over the country, but the best one is Wufeng Mountain. The fineness of natural grindstone in Wufeng Mountain, Sichuan Province is 5000 mesh, and that of natural cyan hard stone is 800- 1200 mesh. This is not to say that the stones in Wufeng Mountain are particularly hard, but hard and not too hard. If it's too hard, it's different from stones and knives. This kind of stone is harder than red stone, and its material is more delicate and dense.

A grindstone is a tool specially used to polish the cutting edge of a tool to restore its sharpness. Because of its long service life, grindstone is a very practical and common kitchen appliance. The role of the grindstone is to form a certain taper on the blade, making it sharp and sharp, and playing the role of cutting. In addition to the grindstone commonly used in the kitchen, there are grindstones specially used to grind the cutting edge of medical instruments.