Furniture products were spot-checked in 2012 and some products were exposed to formaldehyde

In recent news, the General Administration of Quality Supervision, Inspection and Quarantine released the "Announcement on the Results of National Supervision and Random Inspection of 28 Product Categories in 2012." According to the announcement, the administration conducted random quality checks on 28 types of consumer goods and building materials produced domestically, as per relevant regulations. During the random inspection of spring soft mattresses and wooden furniture, several brands were found to have substandard quality. Among them, the Beijing-based brands Wowang, IBOSS, and Xingpai were exposed for failing to meet quality standards. The inspection results highlighted issues such as excessive formaldehyde emissions, poor structural stability, and inadequate durability. The wood furniture product quality supervision and random inspection revealed that out of 239 samples tested from 239 enterprises, 45 products did not meet the required standards. These included problems with formaldehyde emissions, carpentry work, cabinet stability, strength of push-pull components, resistance to cigarette burns, wear resistance, impact resistance, and adhesion. One notable case involved the "Star" brand push cabinet from Beijing Xingyu Wood Industry Co., Ltd., which failed due to poor carpentry and mechanical properties. Another was the IBOSS brand push cabinet from Beijing Century Jingzhou Furniture Co., Ltd., which was listed on the black list because of excessive formaldehyde emissions. According to the national supervision and random inspection results for spring mattress products, a total of 120 types of spring mattresses from 120 companies across 22 provinces, autonomous regions, and municipalities were inspected. Nine products did not meet the required standards, with issues including formaldehyde emissions, bedding quality, and durability. The Wowang brand single spring soft mattress produced by Beijing Wowang Furniture Co., Ltd. in August 2012 was found to have excessive formaldehyde emissions. Similarly, a single mattress made by the Ascott Mattress Factory in Zhangjiawan, Beijing, in May 2012 also failed the test for the same reason. The announcement emphasized that the General Administration of Quality Supervision, Inspection and Quarantine has instructed local quality and technical supervision departments to take legal action against unqualified products and their manufacturers, ensuring compliance with industry standards and protecting consumer interests. This latest round of inspections highlights the ongoing efforts to maintain product safety and quality in the Chinese market.

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Vibrating plate compactors are mainly suitable for materials with less cohesion and friction between compacting particles, such as river sand, gravel and asphalt. The main working parameters of the vibrating plate compaction are: the bottom area of the working plate, the mass of the whole machine, the excitation force and the excitation frequency. Under normal circumstances, the bottom plate area of the same type of plate is about the same, so the performance of the plate rammer is mainly affected by the quality, excitation force and excitation frequency of the whole machine. The excitation force is mainly used to maintain the forced vibration of the tamped material; The excitation frequency affects the tamping efficiency and compaction degree, that is, under the same excitation force, the higher the excitation frequency, the higher the tamping efficiency and compactness.

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