Product Overview and Industry Distribution - Indoor heaters, commonly known as heating appliances, include types such as oil-filled heaters, far-infrared heaters, PTC warm air fans, and halogen tube heaters, all of which require CCC certification [3][4] - Oil-filled heaters typically cost between 400 to 500 yuan and are suitable for use in living rooms, bedrooms, and hallways, especially in homes with elderly or children [3] - Far-infrared heaters are less common in the market, priced around 100 yuan, and are used for localized heating [4] - PTC warm air fans range from 200 to 600 yuan and are ideal for portable home heating due to their quick heating and automatic temperature control features [4] - Halogen tube heaters are priced between 100 to 200 yuan and are effective for personal heating in small rooms [4] - Jiangsu province has about 40 indoor heater manufacturers, primarily small to medium-sized enterprises, with 8 certified companies in Suzhou, of which only 3 are currently operational [4] Inspection Basis and Key Projects - The quality supervision inspection is based on GB 4706.1-2005 and GB 4706.23-2007 standards, focusing on safety and specific requirements for indoor heaters [5] - Key inspection items include protection against electric shock, input power and current, heating performance, leakage current, moisture resistance, mechanical strength, and grounding measures [5][6] Supervision Inspection Results - A total of 15 batches of indoor heaters were inspected, with 2 batches found to be non-compliant, resulting in a non-compliance rate of 13.3% [5] - Specific non-compliance issues included inadequate protection against electric shock, discrepancies in input power and current, structural design flaws, unreliable power connections, and grounding issues [6][7][8][9][10]