Protection against organic gases or vapors, such as benzene and its homologues, ketones, alcohols, ethers, aldehydes, alkanes, carbon tetrachloride, chloropicrin, etc.Protection against inorganic gases or vapors, such as hydrocyanic acid, chlorine, arsine, phosgene, chloropicrin, benzenelewis gas, mustard gas, etc.Protection against sulfur dioxide and other acidic gases or vapors, such as sulfur dioxide, hydrogen chloride, phosphorus and chlorine-containing organic pesticidesProtect ammonia and its organic derivatives, such as ammonia, methylamine, etc.Use mixed four-color label strips of brown, yellow, green and gray that are compliant with the international standardUse imported coconut shell activated carbon for long-lasting effectComply with GB 2890–2022 standardPacking: 108 PCS/box, bag + medium box (6PCS/medium box)