"3G" standard divides the board grade to buy furniture without talking about aldehyde discoloration

On December 1, the **"Green Sheet Procurement Standards"**, issued by the Ministry of Commerce, officially came into effect. This is the first domestic standard aimed at regulating green sheets and also marks China's first green sheet standard that aligns with international norms. The introduction of this standard represents a significant step forward in promoting eco-friendly materials within the construction and furniture industries. The standards classify green sheets into three grades: G1, G2, and G3. Among them, G1 is the highest grade, made using **formaldehyde-free adhesives**, known as the aldehyde-free grade. G2 represents the current highest environmental protection level, referred to as the formaldehyde level, while G3 is the lowest. The formaldehyde emissions for G1 are extremely low, nearly matching the natural state of wood. G2 has emissions of ≤0.3mg/L, and G3 is ≤0.5mg/L. In the future, consumers can identify green and environmentally friendly panels by looking for the **"3G" logo** on the product. Compared to the current national E-level standard, which includes E0 (≤0.5mg/L), E1 (≤1.5mg/L), and E2 (≤5.0mg/L), the "Code" sets stricter limits on formaldehyde emissions. Products that meet the new standards will be labeled with the **Green Home Building Materials 3G Environmental Label**, indicating their compliance level. Additionally, the China Green Home Environmental Technology Working Committee will conduct third-party reviews of the entire production process to ensure consistent quality and environmental standards. It’s important to note that even products labeled as “formaldehyde-free” are not entirely free of formaldehyde. Wood itself contains trace amounts, and while the use of formaldehyde-free adhesives reduces emissions, it doesn’t eliminate them completely. For example, soybean glue, starch glue, and MDI-based adhesives are considered formaldehyde-free, but they don’t guarantee zero emissions. Take cabinets, for instance. Even if the board material meets the G1 standard, other components like veneers, paints, and edge banding may introduce formaldehyde or other harmful substances. Therefore, the “3G” label is an important reference, but it doesn’t fully reflect the overall environmental performance of a product. Experts warn that meeting one standard does not mean a home is safe. The **superposition effect** of multiple materials can still lead to indoor air pollution. Many products might comply with individual standards, but when combined, they could exceed safe levels. This phenomenon is often linked to what is known as **"Sick Building Syndrome"**, where occupants experience symptoms like headaches, fatigue, and skin irritation due to poor ventilation and excessive material usage. Consumers are increasingly concerned about formaldehyde, leading to a rise in demand for "zero formaldehyde" furniture. While these products are more expensive, many buyers prioritize health and safety. However, industry experts caution that the term "zero formaldehyde" is scientifically misleading. As long as the formaldehyde levels meet national standards, there is no need for excessive worry. With the new regulations in place, furniture companies must be careful when advertising "zero formaldehyde" claims. Consumers should remain informed and cautious, understanding that while the "3G" label is a useful guide, it’s just one part of the larger picture when it comes to indoor air quality and environmental safety.

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