The market size of the parking canopy industry is based on a large number of first-hand research and data monitoring covering major industries (including the output and output value of target products or industries within a specified period of time. The basic data information of the survey), and through the independent research and development of multiple market scale and development prospect estimation models, to provide customers with reliable market and market segment size data and trend judgment, to help customers determine the target market size and development prospects, for Market development and market share estimates provide reliable, ongoing data support. The market size is not only the market sales of parking canopy products within a certain range, but also the scale of users or sales. We estimate the existing market based on the area where the parking canopy is concentrated, the stage of development, and the number of users; secondly, we estimate the future market based on the potential users and development trends of the parking canopy. Ultimately, the overall size of the car park products market can be known. In the calculation of the market size of the parking canopy, we mainly adopt the following methods. 1. The source estimation method is to trace the market size of the industry to the source industry that gave birth to the industry. Through the interpretation of the source industry data, the parking canopy industry is deduced. The data. 2. Strong correlation data calculation method The so-called strong correlation can be understood as a strong relationship between the sales of products in the two industries. Through the analysis of the strong correlation industry with the parking canopy industry, the accuracy of the market scale data is confirmed. 3. The demand calculation method is to measure the scale of the target market according to the needs of the target customers of the parking canopy products. Fourth, the sampling analysis method is to extract a certain sample from the population through the sampling method, and then infer the overall situation according to the situation of the sample. Sampling methods mainly include: random sampling, stratified sampling, overall sampling, systematic sampling and snowball sampling.