We were the biggest manufacturer of the Magnesium oxide tubes in China. We can produce various diameter or length MGO tubes. They can be very very slim or very big and very long or very short. It was up to your detail requests. The material purtity can reach 99.3% magenesium oxide. We also can design the special material formula per customer assembled parts working condition. We can manufacture from short to long length MGO tubes with different specifications per your requests. Do not hesistate to contact us. We were the correct supplier of magnesium oxide tubes supplier you requested.