Maybe you are a diameter mandrel purchasing manager, who are looking for high quality diameter mandrel, and Nanos are a professional manufacturer & supplier that can meet your needs. Not only diameter mandrel we produced have certificated the international industry standard, but we can also meet your customization needs. We provide online, timely service and you can get professional guidance on diameter mandrel. Don't hesitate to get in touch with us if you are interested in diameter mandrel, we won't let you down.