20L/25L Water Bottles Our three AOKI (made in Japan) Injection Stretch Blow Moulding matchines and two ASB machines (Made in Japan) can manufacture almost 1.8 million world class 20L/25L, 5GL polycarbonate water bottles and 20L PET Bottles per year. Using the Direct Heatcon technology to stretch-blow mold highly heat-resistant and impact-resistant polycarbonate resin enables container lightweighting and stable molding.Large polycarbonate containers of 10-20L capacity can also be stretch-blown using Direct Heatcon. Light Weight and strength are now compatible characteristics.