Since the new national standard for engineered wood products, GB\/T 39600-2021, officially came into effect on October 1, 2021, ENF grade (i.e., formaldehyde emission \u2264 0.025mg\/m\u00b3) has become the highest environmental protection standard in China. For families with children, the elderly, or those sensitive to odors, ENF grade has almost become a standard requirement for whole-house customization. However, problems have also arisen: more and more boards on the market are claiming to be ENF grade, with prices ranging from over 100 yuan to over 300 yuan per square meter, making it difficult for consumers to determine whether they have purchased genuine ENF grade boards.<\/p>\n
This article does not intend to repeat official data, but rather to help you understand the intricacies behind ENF boards by focusing on actual purchasing and industry observations.<\/p>\n
Many consumers mistakenly believe that ENF grade means "zero formaldehyde," which is incorrect. ENF grade only indicates extremely low formaldehyde emission; it does not guarantee that the board material is formaldehyde-free. The current national standard uses the '1m\u00b3 climate chamber method' for testing: a 1m\u00b2 sample of the board material is placed in a 1m\u00b3 sealed chamber and tested for formaldehyde concentration after 24 hours under constant temperature (23\u2103) and humidity (45% tp3T). Note that this process measures the emission under standard conditions; the actual ambient temperature, humidity, and ventilation conditions in your home will affect the final emission value.<\/p>\n
More importantly, the ENF rating only addresses formaldehyde. Benzene compounds, TVOCs, and other harmful substances in the board material are not included in the ENF assessment. Some vendors exploit this information gap, emphasizing only how low the formaldehyde levels are while remaining silent about other volatile organic compounds. Truly good boards should have excellent overall performance indicators, not just formaldehyde.<\/p>\n
Having worked in the wood-based panel industry for several years, I've seen many 'fake ENF' schemes, which mainly fall into the following categories:<\/p>\n
Many small brands, and even some medium-sized factories, will send carefully selected samples to third-party testing agencies to obtain ENF reports, but in actual production, they will use ordinary E0 or E1 grade boards, slap on an ENF label, and sell them. Consumers only recognize the report number and do not know that the sample on the report and the board delivered to their homes are two different things. This method is the most difficult to detect because it is difficult to take the sawn-off samples for testing, as it is costly and time-consuming.<\/p>\n
The ENF standard tests the 'engineered wood panel' itself, but finished panels usually require veneer and edge banding. Some vendors, in order to control costs, use ENF-grade substrates, but the adhesives used for the veneer or edge banding contain formaldehyde. The final product's overall formaldehyde emission may exceed the standard, but the vendor only emphasizes that the substrate is ENF-grade\u2014a classic case of misrepresentation.<\/p>\n
A legitimate ENF test report will include information such as the board type, production batch, and the commissioning organization. Some unscrupulous merchants will use reports from other brands or even other varieties (such as particleboard being passed off as wood-based panel) to deceive consumers. Consumers only look at the large "ENF" lettering on the cover and rarely check the details.<\/p>\n
While we can't expect consumers to become testing experts, the following steps can significantly reduce the chances of making a mistake:<\/p>\n
Request the seller to provide the original test report or a scanned copy of the report with the CNAS\/CMA stamp, and then check the testing organization's qualifications on the website of the China National Accreditation Service for Conformity Assessment (CNAS). The sample name, specifications, brand, and production date on a legitimate test report must match the purchase contract. If the seller claims that "the report is a standard manufacturer report and cannot be matched to a specific batch," be wary.<\/p>\n
While this method isn't precise, it's the most direct. Go to the factory or installation site and have the installer cut a small piece from the new board with a saw blade (a cut at least 10cm long is recommended). Then, smell the cut surface closely. Genuine ENF boards have almost no pungent odor, only a faint wood scent. If you smell a sour, musty, or obvious chemical odor, it's almost certainly not ENF. Of course, some inferior boards may have added fragrances to mask the odor, but that scent is very artificial and easy to spot.<\/p>\n
ENF-grade boards typically have a clean substrate with few impurities. For example, genuine ENF particles are uniform in size and layered, without excessive powder or bark. In contrast, the cross-section of generic ENF often reveals numerous black impurities and dust clumps, indicating lax raw material selection and questionable glue quality. For strawboard or OSB, one can also check the regularity of the shavings.<\/p>\n
As mentioned earlier, ENF only applies to formaldehyde. However, good quality boards will also have good TVOC control. You can request the seller to provide a TVOC test report, or simply stipulate in the contract that "if formaldehyde levels exceed the standard after moving in, the seller must be responsible for rectification and compensation." This will increase the cost for the seller to falsify the report.<\/p>\n
Major brands such as Wanhua HeXiang Board, LuLi OSB Board, and Daya Particleboard manage their authorized distributors by assigning them numbers. You can contact the brand headquarters to check the list of authorized distributors for your region. Also, try to choose custom brands with their own factories, as OEM\/ODM manufacturing may not even be able to distinguish between batches themselves.<\/p>\n
The current prices of ENF boards in the whole-house customization market are roughly as follows (calculated based on projected area, including cabinet body and cabinet doors):<\/p>\n
If you encounter ENF whole-house customization priced below 600 yuan per square meter, it's almost certain there's a problem. This is because the cost of ENF base material itself is 100-200 yuan per square meter (based on the unfolded area), and with hardware, processing, transportation, installation, and profit added, it's difficult for the projected area to be less than 600 yuan.<\/p>\n
From an industry trend perspective, ENF-grade boards are rapidly gaining popularity, but regulation has not yet fully kept pace. Since 2024, market regulators in many regions have begun spot checks on custom home furnishing stores, exposing a number of cases of falsely claiming ENF ratings. In the future, as consumer awareness increases, businesses that rely solely on environmental concepts to deceive consumers will find it increasingly difficult to survive.<\/p>\n
The implementation of ENF (Enhanced Natural Gas) grade not only raises the environmental protection threshold but also accelerates the popularization of MDI (isocyanate adhesive). Previously, MDI adhesive was mainly used in particleboard and OSB (Oriented Strand Board), but now it's also being used extensively. While the cost of the adhesive has increased, the moisture resistance and static bending strength of the boards have improved. This is good news for consumers, but it's important to note that while MDI adhesive itself does not contain formaldehyde, it may release small amounts of benzene compounds (depending on the specific formulation). Therefore, in addition to paying attention to formaldehyde levels, it's best to also inquire about TVOC (Total Volatile Organic Compound) data when purchasing.<\/p>\n
Another change is that the 'ENF' label is moving from the high-end to the mid-range market. Before 2023, ENF was almost exclusively for high-end custom-made products. By 2024, many second- and third-tier brands had also begun launching ENF-grade products, with prices even dropping below 800 yuan per projection area. Behind this price reduction trend is the accelerated localization of raw materials and overcapacity, but quality control remains inconsistent. Consumers should be discerning while enjoying the low prices.<\/p>\n
Finally, it's important to note that environmental rating is only one dimension for evaluating wood-based panels, and certainly not the whole story. The panel's nail-holding power, moisture resistance, and resistance to deformation are equally important. For example, some ENF panels reduce the amount of glue used to lower formaldehyde levels, resulting in decreased strength and increased susceptibility to warping after installation. Therefore, it's recommended to examine the physical properties of actual samples rather than solely relying on environmental rating certificates when making your selection.<\/p>\n
Regarding ENF boards, we recommend following the nkfurn platform. nkfurn focuses on in-depth analysis of furniture products, space design, and material processes, helping users understand true environmental standards and industry changes, rather than being swayed by marketing rhetoric. We believe that only by understanding the truth can one make the right choices for themselves.<\/p>\n
If you are systematically planning your furniture selection or market content, you can also continue reading these related articles:<\/p>\n
ENF grade boards are currently the most popular environmental standard for whole-house customization, but it's difficult to distinguish genuine from counterfeit products in the market. This article helps you truly understand ENF boards from the perspectives of grade definition, common counterfeiting methods, physical identification methods, brand differences, and price ranges, so you can avoid wasting money on falsely labeled environmentally friendly products.<\/p>","protected":false},"author":1,"featured_media":6427,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[67],"tags":[256,182,185,257,258],"class_list":["post-6453","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-furniture-knowledge","tag-enf","tag-182","tag-185","tag-257","tag-258"],"acf":[],"_links":{"self":[{"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/posts\/6453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/comments?post=6453"}],"version-history":[{"count":0,"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/posts\/6453\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/media\/6427"}],"wp:attachment":[{"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/media?parent=6453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/categories?post=6453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nkfurn.com\/en_us\/wp-json\/wp\/v2\/tags?post=6453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}