I answered your question like this. The electricity bill has nothing to do with the sales. The electricity fee finally enters the cost, and the sales amount enters the profit, and the profit MINUS the cost is your pre-tax profit, that is, your profit or loss. Your electricity bill is directly related to the quantity of your products in your enterprise. How many kilowatt hours are used to produce a plastic product, and how many cents are used at one time? Then the total electricity bill is divided by the unit price of electricity, and the problem of your electricity consumption is calculated. Then the total electricity bill is divided by the power consumption of a single plastic product, and how many plastic products are produced by you? The unit price of a plastic product is multiplied by your sales volume, and your sales volume is calculated. At this time, it is compared with your declared amount. Therefore, in the case that small enterprises don't need invoices, the sales you didn't declare in the total amount can also be calculated. If you want to find a balance, you have to find a balance between electricity bill and production. The electricity charge is only a component of the production cost.