If you want to immigrate, how to apply and what should you pay attention to? Which immigration company is better if it is handled through an immigration company?

Generally speaking, official website, a foreign embassy in China, has information on visa application and immigration application, and the required materials and handling methods are generally available. Go to the embassy website of the country where you want to immigrate and do it yourself. If it is a formal intermediary, it can only make money, and immigration is still possible; If you encounter a black-hearted intermediary, the consequences are hard to say.