熟妇乱伦中文字幕_宝宝真骚是不是想被C_丰满人妻被黑人中出849_YELLOW在线观看 ,国产老熟女真实网站,精品久久只有久久,亚洲影院久久,一本久久伊人精品中文字幕

Service philosophy:


Sincere attitude,

Efficient service efficiency,

Reliable quality of service.

Service if:


Quality assurance period: After the equipment reaches the designated party, the quality guarantee period is 12 months from the date of acceptance.

During the warranty period, where the product quality problems, the supplier is responsible for maintenance, replacement, and bear the full cost. In the receipt of notice from the date of delivery within 300 hours within 24 hours after the sale of service engineers to the scene to solve the problem. 300 km away within 48 hours after the sale of service engineers to the scene to solve the problem.

The company has a mobile service vehicle dedicated to the user service. For large-scale pipeline construction, our company sent someone, car, special service telephone tracking service, construction works are not completed, the service staff does not withdraw.

Warranty period, the company regularly led by the after-sales service engineers regularly overhaul once, to guide the correct use and maintenance of the operator.