A: Degradable materials refer to a class of materials that can meet the requirements of application during use and storage, and can change chemical structure in a short period of time under certain environmental conditions and lose material use performance. Degradable materials are classified into common degradation materials and biodegradable materials. Biodegradable material refers to a degradation material that can be converted into carbon dioxide and water within 180 days by the action of microorganisms under composting conditions. Not all degradation materials are biodegradable materials.