This is a film-forming protective agent for mineral and cellulosic surfaces. It began as a water-based nano protective agent and was refined into the formulation supplied today, with water as the only solvent in the drum and no alcohol anywhere in the system. Applied and left to dry, it leaves a thin, continuous layer that keeps water out of the substrate, slows corrosion at the surface, rejects fingerprints and wipes clean with a cloth.
Where it sits in a process is usually the last step. Stone fabricators treat slabs, worktops and cut-outs; precast and architectural concrete producers treat panels before dispatch; joinery shops and furniture finishers treat timber that will be handled hard or used outdoors; conservation studios treat objects that need protection without a visible build-up. Distributors like it because one drum covers four substrate families instead of four separate part numbers.
The working routine is plain enough for a site visit: dilute, apply, let it dry, and keep free water off the surface until the film has set.
One boundary is worth stating clearly — this is not a bath additive. It protects the surface of a finished material; it is not dosed into an electroplating, electroless nickel or anodizing tank, and it is not a pretreatment for a plating line.
On cultural relics surface protection work, the same product is used at a working strength agreed with the conservator, so the object is protected without the treatment reading as a coating.
| Product Name | Fengfan Wood Stone Concrete Nano-Protective FF-4219 |
| Product Type | Water-based nano film protective agent |
| Solvent System | Water-based and alcohol-free |
| Main Functions | Waterproof protection, anti-corrosion protection, anti-fingerprint performance and easy-clean surface protection |
| Suitable Substrates | Wood, stone, concrete and cultural relics |
| Protective Film Thickness | Approximately 0.5 µm to 5 µm |
| Chemical Resistance | Resistant to most chemicals |
| Application Temperature | Can be used at room temperature |
| Drying Method | Self-drying and drying are available |
| Surface Maintenance | Not easy to absorb dust and easy to clean |
| Solvent | Water |
| Dilution Method | Can be directly diluted with deionized water with a conductivity of less than 30 µS/cm |
| Appearance | Milky white liquid |
| Non-Volatile Matter | 18% ± 2% |
| pH Value | 8.5-10.5 |
This water-based nano protective agent uses water as the carrier. No alcohol is used in the formulation, which is the whole point of the grade: there is no solvent odour in the workshop, no separate solvent store to manage, and no alcohol in the rinse water when tools are cleaned at the end of a shift. The manufacturer describes the water-based system as having good stability, so a drum that is opened, partly used and closed again behaves the same way the following week.
For anyone moving over from a solvent-borne sealer, the difference shows up in the working environment before it shows up in the result. Operators handle a liquid that behaves like water, the product can be used indoors or in a shared workshop, and clean-up does not need a solvent.
Dilution with deionized water is the only make-up step, so the system stays water-based from the drum to the working tank and nothing is introduced that changes its chemistry.
Two practical notes. The safety data sheet is the document that carries handling, storage and transport classification for your market, so ask your sales contact for the current version before the first drum goes into the store. And because the carrier is water, keep containers closed between uses and store them under cover, out of direct sun.
Two things change once a surface has been treated. It is not easy to absorb dust, and fingerprints do not sit on it the way they do on bare stone or unsealed concrete. In day-to-day terms that means a damp cloth or a neutral cleaner does most of the work, instead of a strong product that slowly dulls the finish it is supposed to protect.
The benefit is easiest to see in specific places: showroom slabs that customers touch all day, reception desks and worktops, handrails and door surrounds, dark matte surfaces where every mark registers, and museum cases where an object is handled during installation.
It also helps in the gap between finishing and handover. Parts can be handled, stacked with interleaves and installed with less marking, which cuts the touching-up that quietly eats into a fabricator's margin.
The honest limit: this is an anti-fingerprint and easy-clean surface, not an anti-graffiti or non-stick coating. It reduces marking and dust pickup and makes cleaning easier; it does not stop a surface from getting dirty. On very dark or highly polished material, check the result on a sample before you commit a whole batch.
Resistance to most chemicals is one reason the product holds up outside a laboratory. The film is not attacked by the things a finished surface normally meets — routine cleaning agents, oils and greases, mild acids and alkalis, and the pollutants that settle on exterior work.
That matters most where cleaning regimes are aggressive or where a spill would otherwise stain: kitchens and food preparation areas, laboratory benchtops, workshop and plant-room floors, and exterior cladding in an industrial or coastal setting.
Two cautions. First, most is not all. Concentrated solvents, strong acids and alkalis, and prolonged immersion are a different question — tell us which agent the surface will actually meet and we will confirm compatibility before you rely on it.
Second, chemical resistance works together with the waterproofing: keeping the aggressive agent away from the substrate is half the protection, and an intact nano protective coating keeps that barrier where it belongs.
On stone and concrete protection projects, the agent to check is usually the one the client's own cleaning contractor uses, so ask for the cleaning specification early rather than at handover.
We do not publish a chemical resistance test method and result for this grade; if your specification calls for one, ask what can be supplied with the batch.
Stone takes a water-based protective treatment rather than a film-forming sealer, and the difference shows in the result: the surface keeps its colour and texture, and you are not left with a skin that can chip at an edge or leave a lap mark where two passes overlap.
It suits polished, honed and textured faces — worktops and vanity tops, floors and wall cladding, reception desks and exterior façades — anywhere water-borne soiling would otherwise soak in.
Before a full run, treat an offcut of the actual stone and look at it dry. Dark and polished material shows any shift in gloss or colour first, so judge the sample in the light the finished work will be seen in, and keep the approved piece as a reference.
Two practical points. Apply to stone that is dry, because water still sitting in the pores competes with the product. And treat cut-outs, edges and the underside of worktops in the same session as the face, so water has no untreated path back in.
Stone and concrete protection are often specified together on one project — a stone-clad wall over concrete plinths, for instance — and both can be handled from the same drum.
Conservation work is where the limits of any coating become obvious, and this grade was put together with that in mind: water as the carrier, no alcohol, and a thin protective film that leaves tool marks, inscriptions, incised decoration and surface patina readable.
The objects it is used on are the sensitive ones — carved stone, architectural fragments, wooden items, and museum or heritage pieces that are handled, moved or displayed rather than left in store.
A working sequence that suits most studios: clean and dry the object, test on an inconspicuous area or a replica coupon, record the batch and the dilution, then treat. Keep that record with the object; the batch number is what allows the material to be traced if a question comes up years later.
If an object carries an original surface, pigment or an earlier treatment, involve the conservator before anything is applied. The product protects a surface — whether the surface should be treated at all is their decision, not ours.
For cultural relics surface protection projects, tell us at enquiry stage what documentation you need with the batch; it is far easier to prepare alongside the order than after it.
Choosing the right match is where most sourcing decisions stall. As a trading supplier, we keep one point of contact from first enquiry to after-sales: tell us what you are making and the conditions you work under, and we shortlist the closest matches from our supplier network, compare specifications and arrange samples before you commit to a bulk order. If something does not behave as expected, we work with the supplying partner on the cause and a practical fix, and stay with the case until it is settled. Email, WeChat or WhatsApp enquiries get a reply within 24 hours.
Wood, stone, concrete and cultural relics. This water-based nano protective agent is used for waterproof protection, anti-corrosion protection, anti-fingerprint performance and easy-clean surface protection on those four substrate families, and it is applied to finished materials rather than to a plating bath.
No — there is no alcohol in FF-4219, and the formulation is built on water rather than on an alcohol or solvent blend. For the people running it, that changes a few practical things. There is no alcohol to keep segregated in a solvent store or to account for separately when the drum comes in and out of the building. Handling care still applies, for a different reason: the liquid is alkaline at pH 8.5 to 10.5, so nitrile gloves and eye protection are sensible when decanting, spraying or cleaning up a spill. On timber especially, an alcohol carrier is the one that can raise grain and cut into an existing finish, so leaving alcohol out removes a variable that joinery shops otherwise have to test for. Because water is the carrier, keep the drum from freezing in storage or in winter transit; if it has been exposed to frost, let it return to room temperature, stir it and check it is still a uniform milky white before use. "Alcohol-free" describes the solvent, not the whole formula — the 18% ± 2% non-volatile matter is the film-forming content that stays behind after the water leaves. If your own paperwork or a customer asks for a VOC figure, flash point or transport classification, ask us for those values in writing for the batch you are buying rather than inferring them from the word water-based, and tell us the end use when you enquire so we can confirm the grade fits.
Dilution with deionized water is the intended route, at a conductivity below 30 µS/cm. Check the water with a meter before mixing, add the concentrate to the measured water under gentle stirring, and record the batch, the conductivity and the dilution on the job card.
Approximately 0.5 µm to 5 µm. Where a particular job lands in that range depends on the dilution strength, the number of passes and how absorbent the substrate is, so the thin protective film should be agreed on a sample of the actual material before a full run.
Yes. The product is used at room temperature, and both self-drying in ambient air and forced drying in an oven or warm-air tunnel are supported, so the drying route follows your throughput rather than the other way round.
Far less than an untreated surface. The treated face is not easy to absorb dust and the anti-fingerprint and easy-clean surface wipes down with a damp cloth or neutral cleaner. It reduces marking and dust pickup; it does not make the surface stay clean indefinitely, and it is not an anti-graffiti coating.
It is resistant to most chemicals — routine cleaning agents, oils and greases, mild acids and alkalis and normal atmospheric pollutants. Concentrated solvents, strong acids and alkalis and prolonged immersion should be checked with us against the specific agent the surface will meet.
No. This is a protective finish for wood, stone, concrete and cultural relics. It is not dosed into electroplating, electroless nickel or anodizing tanks, and it is not a pretreatment for a plating line; for plating-related protection our team will point you to the right product in the range.
A milky white liquid with 18% ± 2% non-volatile matter and a pH value of 8.5-10.5, diluted with deionized water, applied at room temperature and dried to a film of approximately 0.5 µm to 5 µm. It is resistant to most chemicals, and the treated surface is not easy to absorb dust and cleans easily.
