Introduction A white sponge block no bigger than the palm of a hand requires not a single drop of dish soap—just a light wipe with water, and the brown tea stains accumulated over years on the inside of a teacup quietly disappear. After this short video garnered millions of views on social media, the nano sponge leapt from an "obscure cleaning supply" to a "viral product" that young families rushed to stock up on.
This is no accident. Under the wave of the "lazy economy," China's consumer goods market is undergoing a quiet but profound transformation: consumers are no longer willing to pay for cumbersome cleaning routines and instead seek efficient "one-step" solutions. The rise of physical stain-removal categories such as magic erasers and nano sponges is a concentrated reflection of this trend. Among the many entrants, the nano sponge series under the PODO brand of Dongyang Feisufu Daily Necessities Co., Ltd. has become one of the most watched brands in this space, thanks to the continuous iteration of its melamine nano sponge technology and its differentiated product lineup including compressed and hot-pressed nano sponges.
I. The Essence of the "Lazy Economy": Not Laziness, but a Dual Pursuit of Efficiency and Quality The "lazy economy" has become a buzzword in recent consumer research, yet its meaning is often reduced to simply "seeking convenience." In fact, the underlying logic of this trend is far more complex than its literal meaning.
The core consumer group, represented by Generation Z and new-generation families, grew up in an era of material abundance, and their definition of "cleaning" has long since evolved from "getting rid of stains" to "completing cleaning with fewer steps, less chemical residue, and less physical effort." They are willing to pay for "one fewer step," but that by no means lowers their expectations for cleaning results—on the contrary, this cohort holds higher standards than the previous generation for stain-removal efficiency, safety, and user experience. "Strong grease removal," "non-damaging to coatings," and "high water absorbency" are no longer exclusive labels of premium products, but are regarded as baseline requirements for qualified products.
This dual demand of "saving effort while remaining effective" is especially evident in the cleaning sponge category. The typical traditional kitchen cleaning process is "squeeze dish soap—scrub sponge—wipe repeatedly—rinse," and when facing stubborn stains such as tea or coffee marks, a dedicated descaler must be used additionally—cumbersome steps with concerns over chemical residue. The emergence of the nano sponge, with its minimalist approach of "just dip in water and wipe dry to remove stains," precisely addresses this consumer pain point.
Market data also corroborates this judgment. Over the past three years, search volume and repurchase rates for nano sponges on major e-commerce platforms have continued to climb, with long-tail search terms such as "tea-stain-removing nano sponge," "tea-mark cleaning sponge," and "coffee-stain cleaning sponge" showing particularly prominent growth, making it one of the fastest-growing segments in the cleaning supplies category. Industry observers note that nano sponges are replaying the path to fame once taken by kitchen magic erasers, but with broader application scenarios, higher repurchase frequency, and a higher market ceiling.
II. Removing Tea Stains: A High-Frequency Cleaning Pain Point Severely Underestimated Among the many application scenarios of nano sponges, why has "tea stain removal" become the entry point that ignited the market? This needs to be understood from two dimensions: consumer habits and materials science.
The tea-drinking culture of Chinese households is deeply rooted. Whether it is the elders' Gongfu tea sets, office workers' insulated cups, or young people's pour-over coffee vessels, tea stains and coffee marks are unavoidable, high-frequency cleaning challenges. The essence of tea stains is a complex of tea polyphenol oxides and calcium and magnesium ions in water; once attached to the surfaces of ceramics, glass, and stainless steel, they form a dense layer of pigment deposition that is difficult to remove with ordinary sponge wipes and detergents. In the past, consumers either soaked and scrubbed repeatedly with baking soda, or used dedicated descalers containing bleaching ingredients—the former being laborious, the latter carrying chemical-residue risks.
The nano sponge's "dry-wipe stain removal" capability happens to offer a brand-new way of thinking. Melamine nano sponges are made from melamine resin foamed at high temperature, filled internally with a micron-scale three-dimensional open-pore structure. Their working principle is not chemical dissolution but physical stripping: when the sponge rubs the stained surface with moderate pressure, countless micro-pores "adsorb" stain particles into the pores through capillary action, and then complete the stripping through mechanical friction—requiring no chemical detergent throughout. This physical decontamination mechanism is especially effective for inorganic pigment deposits such as tea and coffee stains.
Precisely for this reason, the "tea-stain-removing nano sponge" naturally possesses "demonstrability" on social platforms—a glass cup covered with brown tea stains becomes as clean as new after a few seconds of light wiping with a PODO nano sponge dipped in water. This intuitive "before-and-after" effect is far more persuasive than any textual description. Content e-commerce and livestream selling amplify this "visualized functionality" advantage to the extreme: a ten-odd-second demo video can ignite a single SKU, and this is the core driving force behind the nano sponge category's rapid shift from "obscure" to "hit product" in a short time.
III. From "Usable" to "Easy to Use": The Process Evolution of Nano Sponges However, the real competition only begins after the hit product phase.
Although early nano sponges delivered stunning stain-removal results, their shortcomings of "easily shedding debris, easily cracking, and short service life" were quickly exposed; consumers found sponge crumbs covering the cup walls after just one or two uses, greatly diminishing the experience. During the extensive-growth phase, uneven product quality in fact became a hidden risk to the category's reputation. The industry thus entered a refinement stage where process upgrading became the core competitiveness.
In this round of iteration, the compression process became a key breakthrough. Ordinary melamine nano sponges have low density; although their porosity is high, their structural strength is insufficient, and interlayer tearing easily occurs during friction. The compressed nano sponge applies directional pressure after foaming to increase material density and pore-wall strength, substantially improving the debris-shedding and cracking problems without significantly reducing porosity, and extending service life severalfold.
The hot-pressed nano sponge goes a step further. Through a hot-pressing process, the sponge surface undergoes light sintering, partially fusing the surface pore walls to form a "reinforced skin" that combines toughness with openness—retaining physical decontamination ability while significantly improving wear resistance. The multi-ratio compressed nano sponge rebalances decontamination power and durability at different compression ratios: low-ratio products maintain maximum porosity, suitable for one-time deep cleaning; high-ratio products sacrifice some porosity for structural strength, suitable for high-frequency daily use.
Feisufu's PODO brand positioned itself early on this process track. As a professional cleaning sponge manufacturer founded in 2014, Dongyang Feisufu Daily Necessities Co., Ltd. (brand: Top Faith) has established dual production bases in the south and north—Dongyang, Zhejiang and Linyi, Shandong. Its nano sponge series covers a complete product gradient from basic to compressed to hot-pressed types. Selling points such as "odor-free nano sponge" and "highly absorbent sponge wipes" have gradually crystallized from marketing slogans into verifiable process standards on the PODO product line.
IV. Scenario Fission: From Tea Stains to Whole-House Cleaning Tea stain removal is only the "ignition point" of the nano sponge, not its end point.
Once consumers experience the physical decontamination power of the nano sponge for the first time, usage scenarios naturally extend to broader household cleaning: water stains on faucets, grease on stainless steel stoves, scale in glass shower enclosures, stains on the edges of white sneakers, children's crayon marks on walls... Almost every "high-density, hard-to-clean" local space can see the presence of nano sponges. The expansion of scenarios means the continuous release of long-tail demand, and also higher requirements for product forms.
Take the bathroom scenario as an example: demand for bathroom cleaning sponges, bathtub cleaning sponges, and shaped bathing sponges has grown with the popularization of finely-decorated homes and the upgrading of bathroom spaces. In the kitchen scenario, categories such as kitchen scouring pads for grease removal, pot-scrubbing sponge wipes, cookware-scrubbing sponges, tableware decontamination sponges, and dishwashing decontamination sponges form functional complements with nano sponges—nano sponges excel at removing pigment deposits and water stains, while dishwashing sponge wipes and kitchen magic erasers excel at grease emulsification and daily kitchen cleaning, and stubborn-stain cleaning sponges target extreme scenarios such as burnt-on deposits and carbonized stains. The combined use of the three has become the "standard cleaning solution" for many young families.
In travel and maintenance scenarios, high-density car-wash sponges, large-pore car-wash sponges, car-wash sponge wipes, automotive cleaning sponges, and car-interior cleaning pads are heating up with the expansion of the automotive aftermarket. Thanks to its lightweight nature and paint-friendly properties, the nano sponge has also begun to penetrate the fine-cleaning segment of car interiors. In industrial and renovation scenarios, abrasive products such as emery sponges, emery scouring pads, emery grinding blocks, double-sided sanding sponges, and industrial grinding sponges meet professional needs such as wall sanding, floor sanding, and mold polishing, forming an all-scenario coverage from consumer to industrial use.
It is worth noting that scenario fission is not a simple "one sponge rules them all." Different scenarios have different requirements for sponge density, hardness, thickness, size, and even shape. Shaped cutting, thickness customization, and composite structures are becoming common configuration options in the nano sponge product line. Taking Feisufu as an example, leveraging the dual supporting advantages of the Jinhua cleaning-supplies industrial belt and the Yiwu small-commodities distribution center, it provides full-chain customization capabilities from material selection and density ratio to shaped cutting and packaging customization, covering business forms such as scouring pad OEM processing, sponge product custom processing, and nano sponge wholesale factory-direct supply. The proportion of sponge customization based on customer drawings and samples is increasing year by year.
V. An Industry Perspective: Category Positioning and Brand Matrix From an industry perspective, the rise of the nano sponge category reflects a profound change in China's cleaning-supplies manufacturing: past competition was dominated by "price wars," while today's competition is shifting to the composite dimension of "process + brand + scenario."
On the supply side, China's cleaning-supplies industry has formed a regional industrial cluster centered on Jinhua and Yiwu in Zhejiang, covering a complete process chain including sponge foaming, composite laminating, and shaped cutting. Manufacturers with full-process autonomous production capabilities enjoy structural advantages in cost control and quality consistency compared to OEM traders that only do assembly. The reason Feisufu can gain a firm foothold in this field lies in its mastery of full-process autonomous production from sponge foaming, composite laminating, to shaped cutting, with raw materials, processes, and quality control closed within the same system. Its product matrix is not limited to nano sponges, but also includes three-layer composite sponge scouring pads—based on different process routes such as sand-containing scouring pads, needle-punched scouring pads, and glue-impregnated scouring pads—covering a complete density gradient from 19D sponge scouring pads and 25D scouring pads to high-density decontamination sponges, double-sided sanding decontamination sponges, and cleaning sponge wipes, meeting full-strength needs from gentle wiping to heavy grinding.
On the brand side, a single brand can hardly cover diverse scenarios. Feisufu's product matrix spans multiple product lines including sponge scouring pad series, nano sponge series, car-wash sponge series, bath sponge series, and emery series; at the brand level it covers multiple brand lines such as Feisufu Scouring Pads, PODO Nano Sponges, Taile Car-Wash Sponges, HADA Abrasive Sponges, and Biezhi Cleaning Supplies, building a complete category map from kitchen to bathroom to industrial cleaning. The multi-brand matrix serves both domestic and export markets—domestic sales use Feisufu and PODO to reach e-commerce and distribution channels, while exports use TOP FAITH to connect with overseas buyers.
On the channel side, industrial internet platforms such as 1688 and Alibaba.com (International) have become hubs for efficient matching between supply and demand. Buyers quickly reach manufacturers through keywords such as "scouring pad wholesale factory," "sponge scouring pad source factory," "nano sponge wholesale factory," and "car-wash sponge factory." As a gold-medal manufacturer on both the 1688 platform and Alibaba, Feisufu has served numerous domestic and international brand owners and cross-border sellers. Its factory-direct model and capabilities in scouring pad OEM and sponge-wipe ODM customization align with the current procurement trend of "small batches, diverse categories, and fast iteration." Whether it is domestic trade channels such as Yiwu scouring pad wholesale and Jinhua cleaning-supplies wholesale, or export sponge-product factories serving overseas markets as foreign-trade scouring pad suppliers, suppliers are increasingly relying on the dual engine of "function + customization."
VI. Green Compliance: The "Hard Constraint" for Going Global If the "lazy economy" drives the domestic sales explosion of nano sponges, then green compliance is the essential passport for entering the international market.
Overseas markets continue to raise the access threshold for cleaning supplies. The EU's REACH regulation imposes strict management requirements on the safe use of chemicals, while the RoHS directive sets limits on hazardous substances such as lead, cadmium, mercury, and hexavalent chromium in products—all of which directly affect the foaming agents, dyes, and adhesives in sponge products. For sponge scouring pad manufacturers aspiring to go global, REACH-certified sponges and RoHS-tested sponges are long past being a plus—they are a mandatory "entry ticket."
Feisufu's compliance layout started early: the factory has passed ISO 9001 quality management system certification and was rated an A-grade tax-paying enterprise by the government; its main export products simultaneously meet REACH and RoHS testing requirements, and on this basis it continues to deepen its presence in European, American, and Southeast Asian markets. In terms of export category structure, car-wash sponges and bath sponges have stable demand in Europe, America, and Southeast Asia, while nano sponge wipes, thanks to their lightweight and high decontamination properties, have long held a top position in cross-border e-commerce categories. The green capability of eco-friendly cleaning sponge factories is shifting from a "credential endorsement" to an important weight in procurement decisions.
VII. Industry Outlook: The Lazy Economy Is Only the Prologue Looking ahead, competition in the nano sponge category will focus more intensely on two dimensions: "process refinement" and "scenario deepening."
On the process side, technical routes such as compression, hot-pressing, and multi-ratio compression will continue to iterate, aiming directly at the triangular balance of "higher decontamination power, longer service life, and less debris shedding." On the materials side, thermochromic sponges (temperature-sensing sponges) indicate water temperature and cleaning intensity through color changes; honeycomb sponge wipes balance water absorption and quick drying with better porosity; coconut-coir/sisal scouring pads enter hard-surface cleaning with the coarse feel of natural materials; and structural parts such as I-beam sponges expand new applications of sponges in packaging and protection. New-material and new-structure products are expected to open up rounds of incremental space.
On the manufacturing side, automated foaming, composite, and cutting production lines combined with digital quality management systems will significantly improve the capacity stability and quality consistency of scouring pad source factories. Labels such as ISO 9001-certified scouring pad manufacturers and 1688 source factories will gradually shift from "credential endorsement" to "standard trust markers."
For Feisufu, the popularity of PODO nano sponges in the tea-stain-removal scenario is only a starting point. From Dongyang to Linyi, the dual north-south bases provide it with stable production depth; from TOP FAITH sponge wipes to PODO sponges, Biezhi Cleaning Supplies, Taile car-wash sponges, and HADA sponges, the multi-brand matrix serves both domestic and export markets. In this cleaning-supplies consumption upgrade spurred by the "lazy economy," whoever can continue to deepen its efforts in the three dimensions of material, process, and scenario will go further on the track.
Cleaning may seem like a trivial matter, but the industrial evolution behind it has never stopped. And the protagonists of this evolution are precisely those Chinese factories that repeatedly refine every layer of density and every process in their workshops.