(When it comes to the quality assurance of the wiring system, each manufacturer has its own performance. Some provide a product warranty for several years, some provide a system warranty for several years, and some provide a lifetime warranty. The explanation of the content and method of the warranty varies from manufacturer to manufacturer. The manufacturer's commitment to quality assurance is a virtue for domestic users, and it indicates that the manufacturer is responsible for the user. But the user must first figure out what the "quality guarantee" guarantees after all?)
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