Having passed ISO 9001 quality anthentication,our machinery are manufactured by adopting micro-computer control, frequency conversion adjustment, and automatic change filter ,they are A) The mainframe adopted new-type high-effective extruder B) The mantle bolt adopt 38CrMoA1A treated by nitriding the surface of the material with higher corrosion resistance and wearing strength C) All the driving motors are adopted electromagnetic governor motors, flexible and convenient in adjustment and can perform the infinitive stage transmission by controller D) The oven can be provided two types according to the requirements of the client: 1) Traditional curved oven, it is cheaper. 2) Pulling & extending oven with up & down circulating warm wind close to the international technical level in 1990s - this unit has the merit of high output, low energy consumption, compact structure, good quality, steady running, easy operation, good-looking outline, safe and reliable, etc. If they are of your interest,the best quotation will come to you,welcome to visit our factory,sincerely hope to establish business relaitons with you in the near future.