Core Insights - The Shanghai Municipal Market Supervision Administration conducted a quality supervision sampling of cross-linked polyethylene insulated wires and cables rated at 450/750V, with all four sampled products passing inspection [2][3]. Group 1: Quality Inspection Results - A total of four batches of products were sampled, including one batch from a local manufacturer and three batches sold online, all of which met the relevant standards [2]. - The sampled products originated from Shanghai and Guangdong provinces, with three batches produced in Shanghai and one batch from another province [2]. Group 2: Product Details - The inspected products included various specifications such as: - Heat-resistant 105℃ halogen-free low-smoke flame-retardant type B cross-linked polyethylene insulated cable [3]. - Copper core heat-resistant 125℃ halogen-free low-smoke flame-retardant cross-linked polyethylene insulated cable [3]. Group 3: Consumer Guidance - Consumers are advised to check product certificates and inspection reports, including model, specifications, rated voltage, production date, and technical parameters when purchasing [4]. - It is important to verify the inspection report provided by sellers, as electrical wires and cables are critical for safety [4]. - Consumers should inspect the insulation and sheath surfaces for uniform thickness and proper markings, as well as measure the length to ensure compliance with national standards [5].