2. Methodology
2.1. Primary assessment
1) To collect data concerned with resource consumption such as factory map, raw material consumption
data (paper, plastic).
2) To prepare a schematic for the production line and production diagram by collecting data from
documents and a walk through survey of the production line.
3) To identify substances/energy for input and output of each process by listing input/output mass and
energy of each process.
4) To choose areas or issues for assessment, subject to the environment priority with following formula.