国产精品视频永久免费播放,日韩成人区,韩国三级未删减完整版在线,国产精品91久久久,午夜伦理影院,嫩草影院污,久久er99

technical service


      Information service

      The technical service organization shall establish long-term and stable contacts with representative users, obtain various opinions and requirements of users on the products in time, and guide users to use and maintain the products correctly.


      Installation and commissioning service

      According to user requirements, install and debug the product at the site or installation site (or guide the user).


      Maintenance service

      Maintenance services are generally divided into two types: regular and irregular. Regular technical maintenance is service work performed according to the maintenance categories specified in the product maintenance plan and service items. Irregular maintenance refers to the maintenance services that need to be provided due to accidents during transportation and use of the product.