When sourcing HDPE (High-Density Polyethylene) Raschel fabric, the most critical factor is the GSM (Grams per Square Meter), which directly correlates to the fabric's density and durability. You should prioritize nets with UV stabilizers (typically 3% to 5% CIBA additives) to ensure the material does not become brittle under intense sunlight. For agricultural use, verify the Shade Rate (ranging from 30% to 95%) to match specific crop requirements, and ensure the Raschel knit structure is used, as it prevents unraveling if the fabric is cut or torn.