Yes,we have own factory

Yes,free samples are available for you.

1.To specify British,or American or German threads.
2.To specify galvanized or black
3.To specify plain or banded or beaded
4.To specify elbow, tee or other, size and quantity.

FM,ISO 9001，we are offer you any certificates you want

Quality Assurance at Shanxi Goodwill starts with understanding the Customers Requirement and continues till the customer is completely satisfied with the delivery of products and services. Quality Control procedures are well defined and thoroughly implemented.

Quality are promised. We have a dedicated after-sales department to be responsible for all subsequent work after delivery