国产AV天堂无码一区二区三区,精品无码一区二区三区不卡,日韩综合网,最好看免费观看高清电影大全

CONTACT

  • Address: No.2408, Lujin Building, No.14 of Shangwu Waihuai Road, Zhengdong New District, Zhengzhou City, Henan Province, China.
  • Zip: 450000
  • Tel: 0371-69190286
  • Fax: 0371-69190286
  • E-mail: hnshmsy@163.com

SERVICE

Local:HOME > SERVICE

After-sales service

1, create a user profile on a regular basis from time to time with the use of engineering and product;
2, strict implementation of the state for the product warranty provisions and construction unit signed a warranty agreement;
3, establish and improve after-sales service network, service and meet customer needs. Key projects and customers to establish a year-round resident enterprise service teams permanent professional mobile teams. User received notification, maintenance staff 48 hours to reach the scene, implementation and maintenance services.