When evaluating match crackers (friction-ignited pyrotechnic devices), you must prioritize chemical composition stability and ignition reliability. Ensure the friction head uses a high-quality phosphorus composition that prevents accidental ignition while ensuring a 100% strike rate. The outer casing should be made of moisture-resistant kraft paper or reinforced cardboard to prevent dampness, which is the leading cause of product failure. For B2B buyers, specifying a burn-delay time (typically 3-5 seconds) is critical for user safety.