Tonnage refers to the purity of a ton of material. A grade price can be used in the calculation, which is what is usually said to be a grade (or tons). For example, metal tons is 100 yuan / ton, then each grade (metric ton) price is 100/100 = $ 1. The metal content of physical tons is 50% (50 grades), then the price of physical tons is: 1*50=50 yuan/ton. Generally establish three concepts: Physical tons: There are high and low metal grades, as well as differences between wet and dry bases, generally based on dry basis. Baseline ton: The benchmark ton is used when the contract is concluded, and the physical ton is also converted into the benchmark ton when the delivery price is calculated. Metal tons: Generally used in delivery, but in the conversation, everyone knows how much a ton of metal. In fact, the benchmark ton price represents the price of metal tons. Translucent Daylighting Roof Tile Translucent Daylighting Roof Tile is made of PVC as the main raw material, supplemented by UV anti ultraviolet agent, adopting scientific environmental protection formula and extrusion process. PVC Translucent Roof Sheet has the characteristics of good lighting, uniform color, fire and flame retardant, tensile resistance, acid resistance, alkali resistance and organic solvent, etc. PVC translucent roof sheet is an ideal lighting material for modern industrial plants, warehouses, trade markets and channels. Cheap Roofing Sheets,Roofing Sheet Price,Daylighting Roof Tile,Translucent Fiberglass Roof Panels PINGYUN INTERNATIONAL , https://www.pingyunconstruction.com