Model ECO-4L Automatic Stretch-blow Machine is newly designed and reformed on previous experience of our manufacture. Main feature of this model: 1.Servo motor controls the preform stepping motion; 2.Compact with 4 cavities, center distance 139.7mm; 3.Newly high efficiency Ruby Heaters; 4.It is an ideal equipment to make different-shaped containers, such as mineral water bottle, beverage bottle, cosmetics bottle, medicine bottle, pesticide bottle, edible-oil bottle, wine bottle, milk bottle, etc. With reasonable investment and high efficiency, it helps you raise production and save energy.blow Pet Bottle Preform,Mineral Bottle Making Machine.