We are located at becautiful city-shenzhen, near HK. Our drill, casing, pipes export to Iran, France, USA etc. Welcome your inquiry. We are located at becautiful city-shenzhen, near HK. Our drill, casing, pipes export to Iran, France, USA etc. Welcome your inquiry. We are located at becautiful city-shenzhen, near HK. Our drill, casing, pipes export to Iran, France, USA etc. Welcome your inquiry. We are located at becautiful city-shenzhen, near HK. Our drill, casing, pipes export to Iran, France, USA etc. Welcome your inquiry.