Comparison Chart
	OPC's PPU	OPC's WBPU	Traditional Wet Process PU
Process	Energy consumption 3 times less than traditional PU, CO2 emission at least 75% less than traditional PU process	Lower energy consumption, lower CO2 emission	Wet process PU machines and DMF recovery distillation facility consume a lot of energy and emit a lot of CO2
Organic Solvent	No DMF used	No DMF used	Uses organic solvent as dispersion agent, quite a lot used in the process
Characteristics	Durable, firm, great physical strength performance, high rebound resilience	Great physical strength performance, lightweight, texture adjustable from very soft to very hard spectrum, foaming can create breathable & vapor-permeable effect	Good hand feel, PU easily processed, but the process is complicated
Yellowing, Hydrolysis- Resistance	Hydrolysis-resistant; anti-yellowing	Hydrolysis-resistant; more anti-yellowing than PPU	Can be hydrolysis-resistant; be anti-yellowing
Heavy Metal	Heavy metal free	Heavy metal free	Can be heavy metal free
Odor	No irritating smell	No irritating smell	Solvent odor can remain in product
Heat Tolerance	High heat tolerance	High heat tolerance	Possibility of residual organic solvent