1. Q: Are you ISO certificated?

A: A: Yes,Tongyu copper tube is proudly ISO 9001:2008

2. Q: Do you accept custom copper tube?

A: Of course, custom copper tube is our key advantage service, send your drawings at info@tongyu-tech.com

3. Q: If custom copper tube, it need charge module fee?

A: Yes, if your custom copper tubes need to open new module, we need to charge module fee first, when you make mass order, we will return to you.

4. Q: What is your minimum order quantity require?

A: We have no minimum order quantity limited, if your order is small, we can make as samples.

5. Q: What is your payment term?

A: L/C, T/T, Westernunion, small payments accept Paypal

6. Q: What is your private policy about custom core technology?

A: We promised that your custom core technology and information will not be known by third party.

7. Q: Do you inspect the finished products?

A: Yes, Each step of production and all finished products are inspected by Quality Control department before shipping.