Under several material credits its mentioned that "Procure 20 different permanently installed item from 5 different manufacturer"...for EPD/CSR

My question is,
1) To meet the requirement under the credit, can I procure the materials meeting the requirement and install permanently in the project without taking Quantity in the consideration?

2. If I am procuring Aluminum frame from 3 manufacturer out of which only 1 manufacturer is meeting the requirement, will this be counted? OR all 3 manufacturer has to meet the requirement? Cost of material which meets the requirement is high and other material cost is less.