1.our inner tube vulcanizer have ISO9001certificate,the quality of machine can be assured. 2.we have professional design group,wo can design and manufacture all kinds of standard rubber machine according to the requirement of the customers. 3.The machine is used to process inner tube, it has been used widely in the line of inner tube. in addition .we can provide the product line of tube,If you have interet to them, please contact me. main technial data: Size Parameter