At the beginning of 2022, the auditors from the IAPMO Research and Testing,inc. visit the Blosam factory. Check the production processes of the waterproof membrane.
After the long term of inspection and testing, The IAPMO finally offer the cUPC certification to Blosam Waterproof Membrane.
cUPC certification is a very authoritative certification for bathroom products.
Not only in the United States, but also in Canada the cUPC is well recognized for customers.