Table 2.

Environmental criteria and metrics

Criteria	Metrics
Emission	GHG emission
	Carbon dioxide emission
	Sulphur oxide emission
	Nitrogen oxide emission
Pollution	Sound pollution
Waste	Waste production
	Hazardous waste production
	Wastewater production
	Waste reduction
	Chemical waste production
Resource usage	Water usage
	Energy usage
	Utilizing renewable resources
	The output of used energy
	Paper usage
	Utilizing natural light
Raw material	Utilizing green materials
	Hazardous material consumption
	Recycled material consumption
	Durable material consumption
	Environmental-friendly packaging
	Product waste
	Local material usage
	Packaging waste
Environmental merits	Meeting environmental rules
	Recycling ability
	Durability of products
	Producing recyclable products
	Energy usage monitoring
Reprocessing	Reusing resources
	Recycling waste
	Recycling water
Environmental management system (EMS)	Local monitoring system
	Green management verification
	Invest in environmental development
	Green strategies
	EMS quality