Blue tungsten oxide After-Sales Service and Support
Chinatungsten Online After-Sales Service and Support includes but not limits to:
1) Provide export and import documents, custom clearance documents and other needed by customers.
2) Statistics and documents during the testing process.
3) Provide professional answers and solutions which customers may encounter in the course of using.
4) Recycle the residues and waste of blue tungsten oxide from customers.
5) Other after-sales service and support.
Chinatungsten Online Customer Service and Support
Blue tungsten oxide Payment and Document
BTO Pro-forma Invoice
BTO Packing List
BTO Bill of Lading
BTO Certificate of Analysis
BTO Certificate of Origin