When looking for a consulting company, we need to have an accurate positioning of ourselves. Generally, the top consulting companies are large listed companies, and most small and medium-sized enterprises are consulting companies with high selective prices.
Most consulting companies can't cover everything, but focus on a certain professional field. IBM and Accenture, experts in skills, and the four major accounting firms in finance and human resources (PricewaterhouseCoopers, Deloitte, KPMG and Ernst & Young) are all consulting companies that are particularly good at a certain field. When enterprises are looking for consulting companies, they should look for suitable consulting companies according to the consulting business module.
When choosing a company, you can also look at each other's project results. You can find some books of their company, read some fixed methodology and some fixed operation methods, and choose the one that suits you.