放荡丝袜美腿老师榨精视频_日本黄色绿像_天堂岛av,久久久久无码国产精品一区,国产精品国产精品国产专区不片,同桌舌头伸进去我要尿了的

after Service System

The organizational structure of the Lixun service system consists of three levels.

First Level

The headquarters of the company has a national after-sales service and technical support center, providing nationwide 800 service hotlines and online consultation services.

Second Level

There are seven regional service centers throughout the country, responsible for technical services in various regions.

Third Level

Each provincial and municipal service network is equipped with full-time technical service personnel responsible for after-sales service work.

National Customer Service Hotline: 800-8305182
Log on to www.network.com.cn to provide online services through QQ customer service.

Framework diagram of after-sales service system
After-sales service outlets