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As a pioneering brand in the domestic panel industry, the 'Dew River' brand has focused on green manufacturing and technological innovation for many years. It has consistently adhered to its original commitment that 'a brand comes from the quality of its people.' Its products have passed one of the world's most rigorous environmental certifications: Japan's JAS Standard F4 Star environmental certification.       

F4 Star Certification: Why is it the 'Gold Standard' in the International Environmental Protection Field for Panels?

Japan's F4 star certification is regarded as the 'ceiling' of environmental performance for man-made boards, and its strictness is reflected in three core dimensions:

Testing method: Using a desiccator method to fully simulate a real living environment, rather than relying solely on laboratory spot checks, making the data more practically relevant.

Ultimate limit value: Formaldehyde emission limit ≤ 0.03 mg/L, stricter than the U.S. CARB P2 standard, and on par with China's ENF grade, ranking among the strictest globally.

Full-chain production control: F4 Star is not just a series of environmental indicators; it also includes a complete set of measurement method requirements and stringent product standards, requiring the entire production process (raw materials, processes, finished products) to be approved by official Japanese institutions to ensure uncompromising quality.

With dual environmental protection certification, redefining healthy home choices

With both ENF grade and F4 star certifications, our company's products have achieved 'dual recognition of domestic standards and top international standards.' This means consumers can enjoy eco-friendly performance comparable to or even surpassing international brands without having to seek imported boards, providing a safer choice for sensitive environments such as homes with infants, schools, and hospitals.

In the future, we will continue to focus on low-carbon technologies and green materials, fulfilling the mission of being a 'Guardian of Healthy Homes' with world-class quality, and making our national brand a core force in the global eco-friendly panel market.