When evaluating a Garments Boiler Suit Factory, you must prioritize fabric weight and composition. For standard industrial use, a polycotton blend (65% polyester, 35% cotton) with a weight of 240-280 GSM is ideal for balancing durability and breathability. Ensure the factory uses triple-needle stitching on high-stress areas like the crotch and armpits to prevent tearing. Additionally, verify the quality of hardware; heavy-duty brass or nylon two-way zippers and concealed studs are essential for preventing scratches on work surfaces.