Sales gross margin = (operating income-operating cost) ÷ Operating income× 111% Cost gross margin = (operating income-operating cost) ÷ Operating cost× 111% Generally, only sales gross margin is calculated, and the cost gross margin is only used to calculate the operating profit generated per unit cost.

1. Profit of main business = main business income-main business cost-main business tax and surcharge.

2. Profit from other businesses = other business income-other business expenses.

3. Operating profit = main business profit+other business profit-operating expenses-management expenses-financial expenses.

4. Total profit = operating profit+investment income+subsidy income+non-operating income-non-operating expenditure.

Introduction

The so-called "scarcity is precious". If there are no such products in the market, or if there are few such products, or if such products have an advantage in quality and functional value compared with similar products in the market, then the price of the products naturally adopts the high-priced strategy. On the contrary, if the market is saturated, it can only achieve the sales price that follows the trend and achieve the average sales gross profit.