Some customers don’t understand why price of 3L semi-auto bottle blowing machine for PP milk bottle is similar to 6L semi-auto machine for water bottle or PC milk bottle? customers keep bargain with me. Their points are 6L machine is bigger than 3L machine. Today I’d like to tell the difference between two machines: as below I update few machine photos of PP milk bottle. You may see that the heating furnace of PP milk bottle is pretty long due to the performance of PP material. That’s why the price higher. If you want to know more about PP milk bottle production line, contact me at sales02@tzborn.com.