What kinds of table tennis ground materials are there? What is the difference?

The bottom plate is made of plywood or single wood, and some bottom plates will add three unnatural substances, carbon, titanium and fiber, but ITTF stipulates that the natural composition of table tennis bottom plate must reach more than 85%. There are two kinds of single wood: single juniper (the one used in Ryu Seung-min) and single Ayous. Plywood can be divided into five, seven or more layers, and can be divided into core material, strength material and surface material according to the different layers of plywood. The core material mainly determines the bottom light and strength of the bottom plate. The commonly used core materials from soft to hard are paulownia, white wood and Ayousi. Generally, paulownia is relatively soft and is only used on the floor with fiber or carbon. The cypress tree generally only appears on the violence board of the seven-story cypress. The strength and speed of the floor are determined by the strength material. Commonly used strengthening materials are Ayous, Abbas, spruce and Pinus sylvestris var. mongolica. Cinnamomum camphora, eucalyptus globulus, okmi, basswood, catalpa bungeana, birch, oak, etc. There is also a customized floor, which is made of Korean pine. The grain is fine and the hardness is slightly harder than that of Pinus sylvestris var. Mongolian kapok. The flour material determines the ball eating ability and speed of the floor. The commonly used flour materials include Ayousi, Abasi, Anger, Alnus cremastogyne, Maple, Limbamu, Gu Teng, Acer negundo, Walnut, etc. From soft to hard. Carbon, fiber, etc. Most of them are patented technologies of various manufacturers, and the specific information is difficult to know, only their nature is known. Generally, the carbon plate is strong and fast, but due to the characteristics of carbon, the carbon plate generally falls off quickly, so the controllability is poor, and the difference between the stressed and non-stressed speeds is not obvious. In addition, the vibration frequency and amplitude of the soleplate with carbon will change, which will make the feeling of hitting the ball disloyal to the fingers. We call it "bad feel", so carbon is rarely used in straight boards that are good at manipulation. So far, all the straight world champions are made of pure wood. Because many pure wood with five clips are good at eating the ball and drawing the arc, the ball speed is slow, so fiber is added, which is characterized by toughness when pulling the ball, so that the ball can be thrown in the past. All the above are the best sports members, Long Lao, who have worked hard for it, and hope to adopt it.