Carop

That number you wrote once — have you checked it since?

A value typed into a spreadsheet once stays there. Meanwhile sources publish new data, products that recertify come back with different values, and the GWP basis changes too. By the time you rewrite the report, it's hard to tell which value you used.

The card here is a factor we just looked up. We pick the product with four or more editions whose value moved the most, fresh each time.

Just looked up6 EPD editions
방염벽지
(주)서울벽지
As of 2025.12
0.905962kgCO₂e/m2
20202025
+47.5%
20202025

Same maker, same product, and the value differs from year to year. went up. There are 334 products like this. It isn't common, but if one of them is a material you use, the number in your report is wrong.

Look at this factor

Read from the public sources just now — reload and a different product may appear