The unit is used for producing plastic hoses such as PVC, PP, PE, etc, and can be used in medical industry, chemical industry, beverage industry etc. Products: single tube, color coded single tube, equal diameter paired tube, unequal diameter paired tube, color coded paired tube. The unit has advanced design and the the nain engine and marking nachune adopt various frequency regulation with steady extrusion speed. Water level and temperature of cooling flume are autocontrol. Quick cooling speed, high turnout. The tractor uses innoxious flat tape and roll assembly, various frequency regualation and constant tracting speed. The cutting device adopts high precision rotary encoder to control the length; accordingly the cutting length has small error and even cut.