Group 1 - The core idea of the news is the launch of a free indoor air quality testing initiative by the Suzhou Market Supervision Administration to promote a healthy living environment for residents [1][2] - The initiative will provide free testing for 250 households in Suzhou, focusing on pollutants such as formaldehyde, benzene, toluene, xylene, and total volatile organic compounds (TVOC) [1] - Registration for the testing will open on June 6, 2025, and will be conducted online through the Suzhou Market Supervision Administration's official website or WeChat account [1][2] Group 2 - The testing will take place from July 1 to September 20, 2025, with selected households being contacted for in-home testing and results communicated via SMS [2] - Participants must provide accurate personal information during registration, and duplicate registrations using the same ID or address will be disqualified [2] - Households are required to prepare their homes for testing by closing doors and windows for at least 12 hours prior to the inspection, and the results will be for reference only without a formal report [2]