双色球基本走势图机选


Pre-sale service

Before sales service:

Receive inquiry - Listen to customer needs - Provide initial solution - On-site measurement available - Design - Project budget - Adjust and confirm order


Sale service
On-sales service

Confirm shipping information - send product - acceptance product - guide installation / domestic installation service available - fill customer satisfaction questionnaire

After-sales service
After sales service

Quality issues are included in the validity period
L provide replenishment services
L Regularly review customer usage

L Feedback on customer feedback within 24 hours



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