How to become a pre-sales engineer

I have been doing pre-sale for many years, and the starting point is not the same. Before R&D and after-sale resale, the routes are different, but one thing is the same, that is, I should be familiar with the products and the industries where the products are located and have accumulated experience. I am the route before after-sales resale, so I am very familiar with my own products, similar products and manufacturers, and at the same time I have the ability to make plans, PPT and presentations, so I naturally turn to pre-sales. You just graduated, and your knowledge of products, industries and competitors is close to zero, so the chances of doing pre-sales are very small. Unless you go to a big company, the big company has always had a talent reserve and talent training mechanism, and you can also accept pre-sale for newcomers with zero experience. If you can't go to a big company, you'd better start with after-sales support, product testing and other routes and accumulate for two years. You should be careful these two years, and don't concentrate on your own products. After two years, if you still like pre-sales, it's time for you to switch to pre-sales.