★☆☆☆☆
Minimal sustainability — Non-renewable feedstock. Energy- or chemically-intensive processing. Not biodegradable. No viable recycling pathway — typically ends in landfill or incineration.
★★☆☆☆
Emerging — Partially renewable or recyclable, but with significant trade-offs: high processing energy, heavy water use, hazardous chemical inputs, or limited local availability. Recyclable only via downcycling.
★★★☆☆
Good — Renewable feedstock or high recyclability. Moderate processing energy with no major toxic inputs. Biodegradable or has an established recycling pathway. Aligns with standard sustainable sourcing practices.
★★★★☆
Very good — Renewable and biodegradable, or fully recyclable without quality loss. Low-energy processing. Locally available within the Philippines (reducing transport emissions). Minimal chemical use. Supports regional supply chains and livelihoods.
★★★★★
Exemplary — Renewable, biodegradable, and recyclable. Sourced from agricultural waste or residue — no additional land use required. Low- or zero-emission processing. Entirely local supply chain. Actively supports Philippine community livelihoods. Suitable for circular economy applications across multiple life cycles.