In reality, the density of products from different manufacturers generally varies. But the approximate value is not that different from the parameters above. When you buy, you can only choose to buy by square or by kilogram. If you determine the density of the product and purchase by both the square and the kilogram, the results of the purchase will be different. The product density that wants to understand some manufacturer is very easy really. You just need to know the price per kilogram and the price per square for a certain thickness of anticorrosive tape or heat shrinkable tape. (You can get the price by asking)

For example: if the thickness of 0.5mm anticorrosive tape, the manufacturer tells you, according to 10.8 yuan per square meter; If according to kilogram, 18 yuan /kg. Then you can calculate the density of tape: thickness of tape * density = per square weight per square weight * unit price per kilogram = unit price per square So: density = unit price per square ÷ unit price per kilogram ÷ thickness Therefore, the density of 0.5mm thick tape =10.8÷18÷0.5=1.2