Hello, I\'m trying to contact you in response to your emails but the delivery system reports an error message and the emails cannot be delivered to you. I have been waiting the samples since early February but nothing has arrived yet. I have seen your new square tubes and it\'s very interesting for me to get a sample of them also. if you don\'t mind to contact me again with a valid email address I would be highly grateful. Thank you very much for your kind attention Best regards, Ramon Cabrera I want to receive: Sample Needed .