求翻译：质量部、二级单位配合销售部门做好技术服务工作，解决用户使用中的疑难问题，指导用户正确选用产品等。是什么意思？

Quality Department, two units with the sales department and providing technical services to solve difficult problems in the user guide users to the correct selection of products.

Quality Department, the Level 2 units meet the sales, technical service departments to do a good job in addressing user Use the troubleshooting problems, and guide the user properly select products.

The product stores up the place to be supposed to have the protective measure, guarantees the product outward appearance and the intrinsic quality is not affected; In the transportation process should sign the quality assurance contract with the correlation transportation department; The product in

Quality, two-level units with Sales Department completes the technical service work, solve problems in users, instruct users to correctly select products.

Quality, two-level units with Sales Department completes the technical service work, solve problems in users, instruct users to correctly select products.