As a Sales Engineer, why should you have technical skills like advanced knowledge of the products and problem solving skills?‎

This is important to having knowledge about the products because sometimes customers want to know more about the product or sometimes they confused between two items so if we have knowledge then we can help them to tell the qualities and differences about products. That service makes for customer easier.

If you are in the sales industry the most important thing that you need to know is the product knowledge. Theres a time that the products is not good and you need to know what is the other good quality on it so that you have a good and bad knowledge about the product so its easy you to explain to the customers. Because i believe all products have a good and bad side quality.

It is a Basic Brick to have technical skills and advanced knowledge of the products to easily approach, conduct and comunicate with the customers about the product features, Benefits and advances, To set your goals and define targeted customer with suaitable product features in presales stage and for troubleshooting after sales 

As a sale engineer I should have above skills because I need to explain costumer about the product as simple as they can understand. 

As a Sales Engineer you should have a good knowledge about your products and how they work , after having this knowledge you need to learn how to communicate it effectivly. Gaining technical skills will help you to communicate this knowlege easily,smoothly and correctly. You might need technical skills to propose your products formaly and briefly and effciently to your manager or to present your product attractivly to the customer . You also need to follow the problem solving strategy to identify the exact problems then select a proper solution.  A good example of these problems could be lowering the costs , rising the profits, or reaching customer satisfaction..etc , or any other deep detailes issue. 

After having this knowledge you need to learn how to communicate it effectivly.

To contact with customers and solve any issues

So as to better linked and communicate with the client better

They must have extensive knowledge of the products’ parts and functions and must understand the scientific processes that make these products work.

If you are not technically sound about the product you are selling you wont be able to sell it properly and if any one asks you about the core things you may end up feeling embarrassed

Nothing gives a buyer confidence seeing a sales engineer describing a product he loves and want to acquire, explaning the details to the bearest minimum to a layman's understanding. It gives the buyer confidence that if eventually they encounter any malfunction or issue they will not hesitate to reach you.