How long does it take for a compostable bag to decompose?

For Ecopro’s compostable bags, we mainly use two type of raw material, and according to the TUV guideline:
1.Home compost formula containing cornstarch that breaks down in the natural environment within 365 days.
2.Commercial/ Industrial Compost formula that breaks down in the natural environment for over 365 days.
In a human-made environment such as a commercial facility, it could decompose fully within 7 days. For home compost bin, the time would be vary, as it is depending on the humidity, temperature, or rather if the user would add the decompose agent to speed up the process. What we could ensure is that the product’s has met with the BPI ASTM D-6400, TUV home compost, EN13432, and ABAP AS5810 & AS4736 standard.