Eighteen kitchen knives P22 40-50 yuan, these are 80- 150 yuan. In fact, kitchen knives are second-hand products, and easy to use is the last word. It is also a pile of scrap metal. There are several characteristics of using a kitchen knife: 1, steel is good, and it is very simple to listen to the sound with a flick of your finger on the knife. The sound is crisp and pleasant, and a long knife must be good steel. On the other hand, it sounds like stone, and steel is certainly not much better. In ancient times, there was a saying that listening to sounds and arguing with knives. 2. Look at the blade, the blade is flat and the lines are perfect. The blade of the kitchen knife is brighter and sharper. 3. Look at the feel. Holding the kitchen knife in your hand and waving it up and down won't cause a top-heavy feeling, and the kitchen knife is evenly stressed. At present, the traditional old-fashioned kitchen knives mainly include stainless steel kitchen knives and steel forged kitchen knives made of deaf shells in China and San Francisco. Generally speaking, the strength of stainless steel knife is not enough to cut vegetables, but it is difficult to use when it becomes dull after a long time. The appearance of the old kitchen knife is rough, but it is quite sharp and durable, and it is easy to grind. It has good performance of cutting vegetables and bones.