Polyurethane Catalyst DBU: “Magic Factor” in Agricultural Covering Films In the field of modern agriculture, the polyurethane catalyst DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) is becoming one of the important technologies to promote the improvement of agricultural production efficiency with its unique catalytic performance and versatility. This seemingly inconspicuous chemical substance is like an invisible gardener, silently exerting its...