Many building materials and new furniture are marked with "green certification". Recently, China Consumers Association issued a warning. When consumers purchase furniture and decoration materials, if they discover that there is a “green certification†in product promotion, they must pay attention to verifying the authenticity of the issuing authority and number. If a false certification is found, it may be reported or reported to the national certification management department or the administrative department for industry and commerce. The Consumers Association explained that at present, a group of enterprises in the market are improving their competitiveness through the production of green and environmentally-friendly household products and gaining market share, but there are also many “green certifications†that are false exaggerations and misleading, and some certification agencies have no qualifications at all. , and only certification of a single indicator, under the guise of "special certification" fuzzy words eye-catching. The China Consumers Association reminds consumers that when purchasing furniture and decoration materials, if they find that there are “green ratingâ€, “green recommendation†and “green certification†in product promotion, we must pay attention to verifying the authenticity of the issuing authority and number. . Consumers can make inquiries by logging into the country's official website ([url=http://][/url]). It is understood that in addition to the internationally recognized ISO14000 environment system certification, the current major environmental product certifications in China include the following three: One is through the State Environmental Protection Administration's "China Environmental Labeling" (10 rings) certification, which is currently the highest in China The second level is the product certified by the China Quality Certification Center “CQC Quality Environmental Protection Productâ€. The certification mainly includes quality and environmental protection. The third type is the CTC mark certification (CTC). Built on the basis of the South China Station of the National Furniture Inspection Station, it can be tested in addition to certification. The joy home network expert tips, green building materials and building materials to achieve 10 national standards are different, the former is far more connotation than the latter. The building materials that have reached 10 national standards are building materials that meet the passing standards in terms of environmental protection. They can not be called green building materials. They can only be called “standard building materials†or “environmental protection building materialsâ€. Therefore, many products on the market are under the banner of “green†formaldehyde-free. Actually, they do not mean that there is no pollution, but that their pollution is lower than the national limit. Joy home network also reminded everyone that in the decoration design, in particular, should pay attention to the indoor environment factors, reasonable with decorative materials, fully consider the indoor space carrying capacity and ventilation; should try to use non-toxic, less toxic, no pollution, less pollution The construction process, the use of wood-based panels in the saw mouth, should be coated with paint, so that it fully cured, which can form a stable protective layer to prevent formaldehyde emissions within the sheet.
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The simplest shape of the reinforcing ring is a rectangular column attached to the surface of the product, but in order to meet some production or structural considerations, the shape and size of the reinforcing ribs need to be changed as shown in the following figure. The position of the bottom of the product must be rounded to eliminate excessive stress concentration. The rounded corner design also gives the runner a gradual shape to fill the cavity with curvature. Problems such as water trapping will also lengthen the production cycle and increase production costs.
Shield Reinforcement Ring,Tunnel Reinforcement Ring,Shield Tunnel Ring,Concrete Surface Of Ring
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