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 violet tungsten oxide from customers.
5) Other after-sales service and support.
Chinatungsten Online Customer Service and Support
Violet Tungsten Oxide Payment and Document
VTO Pro-forma Invoice
VTO Packing List
VTO Bill of Lading
VTO Certificate of Analysis
VTO Certificate of Origin