When sourcing HDPE (High-Density Polyethylene) folding tables, prioritize a panel thickness of at least 3.5cm to 4.5cm for structural integrity. The HDPE material should be UV-protected and blow-molded, ensuring it won't crack, chip, or peel when exposed to sunlight. For the frame, ensure it uses powder-coated steel tubing (typically 25mm to 28mm diameter) with a wall thickness of 1.0mm or higher to prevent bending under heavy loads. Additionally, look for honeycomb structural reinforcement on the underside of the tabletop to maximize weight capacity.