High quality heat insulation strip appearance size regular, uniform thickness. Neat edges, no burrs, cracks and other defects, the overall appearance is beautiful. The appearance of the inferior heat insulation strip is irregular and the thickness is uneven.
Choose well-known brands of heat insulation strips, the quality is more guaranteed. There are usually relevant certification marks, such as ISO9001 quality management system certification, CE certification and so on. These certification marks are the recognition of the quality and performance of the insulation strip, and can provide a certain reference for consumers.