1. Q:Are you a manufacturer or a trade company? We are a manufacturer, we have our own production line. 2. Q:Can you do OEM business? Yes, we can do OEM business and we have over 5 years OEM experiences. 3. Q:Can you provide sample for quality reference? Yes, we do provide samples for our customers. 4. Q:Do you have a quality warranty, how long it is? Yes, we have a quality warranty for 5 years, we will provide 10 more tubes for each 1000 tubes order to make up the wastage. (quality warranty doesn’t contain damage from natural hazard and human factors.) |