WATERPROOFING PROTECTS YOUR WHOLE HOUSE

COMPANY PROFILE

CHINA LESSO

Established in 1986, LESSO (Stock Code: 02128.HK) is a global leader in home furnishings and building materials. The Group’ s business porfolio spans plastic piping, building materials and home furnishings, environmental protection, new energy, supply-chain service platforms and others. It offers a wide range of products such as pipes， photovoltaics, plumbing and sanitary ware,integral kitchen materials，integral doors and windows,aluminum formwork and smart scaffolds，water purifiers, water-proofing materials and sealants, fire-fighting equipment, valves, cables, lighting, hygiene materials, items for environmental protection, agricultural facilities, and oceanic aquaculture cages. In 2023, LESSO'ssalesrevenuereachedoverUSD4.38billion.

Since implementing a strategy of globalization and expanding its global presence, LESSO has evolved intoasophisticated multinational.It boastsmorethan30advancedproductionbasesworldwide, broadening its industrial and sales networks to cover Asia，North America, South America,Europe, Africa, and Oceania. This enables LESSO to provide quality products and services for global customers in accordance with its continuously improved strategic layout in a timely and efficient way.

LESSO has founded its R&D center with more than 1,oo0 scientific researchers,nationally accredited enterprise technology center，and two post-doctoral workstations to support its innovation and technical development. The Group has taken a leading role in the revision of over 120 international and Chinese industry standards.LESSO owns over 30o0 patents (some of them are pending),and provides over 10,000 varieties of products, making it one of the most comprehensive manufacturers in the piping industry. Its products are utilized globally in different areas, including home decoration, civil construction, municipal water supply, drainage, energy management, power supply and telecommunications, gas supply，fire-fighting,environmental protection,agriculture,oceanic aquaculture，etc.

True to its idea of “Envisioning the Better, Building the Future", LESSO remains committed to creating a better living environment, and advocating ideal cities featuring greenness, livability, and eficiency. With concerted efforts from various sectors, LESSO will fully play its role in sustaining healthy and beautiful space so that global residents could enjoy a comfortable life.

Waterproof Boutique Protecting Your Whole House

Engineering waterproofing

Non-Asphalt-Based Polymer Self-Adhesive FilmWaterproofMembrane

Model:JH-P200

ProductOverview

Thenon-asphalt-basedpolymerself-adhesivefilmwaterproof membraneisamulti-layer compositewaterproof material with superior performance,including a high-density polyethylene(HDPE) polymerfilm，a highpolymer adhesive layer, and reactive inorganic polymer particles in a unique process. It can be chemically cross-linked with thecastconcrete andphysical mortise and tenon toachieve high strength andpermanent adhesion,which cancompletely prevent“water channeling"and is not affected by the displacement of the base.It canmaintain high peel strength in long-term immersion.This product is convenient for application, and the cast skeleton steel barcanbeaddedaftersimpletreatment.

ProductFeatures

oIt forms a permanent organic adhesion with the concrete,preventing moisture from seeping into the gapbetween the waterproof coil and the structure. oIt is bonded on one side, integrated with structural concrete, and is not affected by the displacement of thebaselayer. oIt is convenient for application, and the cast skeleton steel bar can be added after simple treatment. oIt has long service life and good weather resistance.

o No protective layer is required, and people can walk onthewaterproofmembraneimmediatelyafter application.
oThe application period is short, one third shorter than thatof ordinarymembranes.
o It can maintain high peel strength in long-term immersion.
oIt has excellent puncture resistance.

ProductApplications

The non-asphalt-based polymer self-adhesive film waterproof membrane is specially designed for underground waterproofing difficulties， so it is only suitable for underground or tunnel waterproofing projects.It is not recommendedforbuildinggroundwallsorroofwaterproofing.

ExecutiveStandard

Executive standard of product performance: Requirements for plastic waterproofing sheets (class P) in GB/T 23457-2017"Pre-appliedwaterproofing sheets"

ProductSize

Polymer Polyethylene Asphalt Composite pre-laid Waterproof Membrane

Model:LS-S600

ProductOverview

The LS-S60oPolymer Polyethylene Asphalt CompositePre-laid Waterproof Membrane is crafted using a custom-made =0.7mm thick PE100-RC ultra-tough polyethylene sheet from LESSO as the inlay. It features a unique patented ionic-bonded polymer-modified rubber layer on both the upper and lower sides, with a sand-surfaced bonding layer on the upper surface. This membrane integrates the benefits of polymer, SBS, and pre-laid membrane technology into onepre-laid，anti-adhering waterproof solution.

ProductFeatures

·A pre-laid waterproof membrane that combines the benefitsofpolymerandSBS modifiedasphalt.

oResistance to hydro-static pressure is more than 3 timesthatofconventional membranematerials.

oWithanelongation15 timesgreater than that of conventional SBS asphalt waterproof membranes, this product is highly resistant to being pulled apart. o Superior resistance to stress and deformation.

ProductApplications

Base plates of industrial and civil buildings and side walls of external defense and internal plastering.

ExecutiveStandard

Product performance standard complies with the Class P requirements in GB/T23457-2017 "Pre-laid waterproof membrane".

ProductSize

ApplicationMethod

o Plane construction: Cleaning the base layer→ snapping lines on the base layer \longrightarrow laying pre-laid anti-adhesive membranes \rightarrow lap joint treatment \rightarrow detail node treatment \rightarrow tying steel reinforcement bars \rightarrow pouring concrete

o Vertical construction: Installing vertical support→ snapping lines on the base layer \rightarrow layingpre-laid anti-adhesive membranes \rightarrow mechanically fixing the membranes→ lap joint treatment \rightarrow detail node treatment →tying steel reinforcement bars \longrightarrow pouringconcrete

Polymer Membrane-based Waterproof Membrane

Model:LS-K100

ProductOverview

Featuring an inlay of LESSO customized PE10o-RC ultra-tough polyethylene membrane (sheet), this product is a self-adhesive sheet made of patented ionic bond self-adhesive glue as the bonding layer, polyethylene membrane as the double-sided coating material,and special customized petroleum asphalt rubber as the core base material. Enhanced with active additives and tackifying resin, this product can be applied on wet base surfaces and maintains consistent bonding properties even at low temperatures.

ProductFeatures

· The unique lonic Bonding technology generates strong ionic bonds,providing more than 1.5 times thebondingpower ofconventionalmembranes.

· The ionically bonded adhesive layer can be intrinsically bonded at -15°C tomeet awiderrange of engineering requirements.

oEasier detailing,integrated sealing of large surface nodes.

° Hydrophilic additives allow the adhesive to form a fully bonded，water-tight sealing interface with the base,regardless of moisture levels. °The addition of various rubbers creates a rich "network" structure，significantly increasing durability. ·Strong resistance to corrosion and excellent durability.

ProductApplications

oIt is widely used for waterproofing of all kinds of industrialand civil buildingsand municipal projects.

oldeal forwaterproofingandseepage control in tunnels,pools，and drainage systems.

^\circ Suitable for waterproofing, seepage control, and moisture-proofing in various projects, including basement floors, side walls, ceilings, and rooftops.

oWaterproofing of works where open flames are not permitted.

ExecutiveStandard

Executive standard of product performance:Requirements for high strength class (class H) in GB/T 35467-2017 "Wet installedwaterproofingsheets".

ProductSize

Root-resistant Waterproof Membrane for Planted Roofs

Model: JH-N300

ProductOverview

This product is made from premium asphalt, modified with styrene-butadiene-styrene (SBS) thermoplastic elastomer resin.It incorporates a high-polymer root-resistant modified asphalt material, enhanced with an imported chemical root-blocking agent, and crafted using a specialized process. The membrane is reinforced with a polyester inlay and covered with a polyethylene (PE) film, along with various other surface materials, ensuringsuperiorperformance.

ProductFeatures

·This membrane offers both waterproofing and root resistance, effectively withstanding plant root punctures while maintaining long-term waterproofing without hindering the normal growth of plants.

°It can form a high-strength waterproof layer with strong resistance to pressurized water, and it is resistant to puncture， cutting, tearing and fatigue.

oThe membraneboasts a thick layer of modified asphalt coating, providing strong adaptability to base shrinkage, deformation, and cracking.

ProductApplications

Thismembrane is ideal for the root-resistant layer ofplanted roofs and the ceilings of underground structures that require greening. lt ensures that plant roots do not penetrate and damage the underlying structure while alsoprovidingwaterproofing.

ExecutiveStandard

Product performance standard complies with the Class P requirements in GB/T23457-2017 "Pre-laid waterproof membrane".

ProductSize

ApplicationMethod

Hot melt method: base inspection and cleaning \longrightarrow applying base treatment agent \to trial laying, positioning, and snapping lines \rightarrow addinglayer \rightarrow largesurfacemembrane application \rightarrow rolling and venting \rightarrow coating on the back of membrane \longrightarrow base coating \longrightarrow pasting, rolling and venting \longrightarrow edge sealing \longrightarrow fixing and sealing \rightarrow cleaning, inspection, and acceptance

High-adhesion, Anti-slip Rubber Asphalt Waterproof Coating

Model:LS-E502

ProductOverview

Thisproductisasinglecomponentwaterproofcoatingbasedonwater-basedemulsifiedasphalt combinedwith modifiedpolymerrubber latex and avarietyof specialfunctional additives.Theproductoffers eco-friendliness and easy application of water-based coatings,and thanks to the special additives,it provides strong adhesion and elongation after curing, making it especially suitable for composite use on vertical walls and membranes.

ProductFeatures

° Single-component, ready to use, easy to apply; oWater-based，solvent-free，cold application，safe and eco-friendly; ·Fast drying, suitable for wet substrates;

^\circ Good bonding strength of the coating to the base and membranes, and high skid resistance on the facade; 。The product offers good elongation, allowing it to resist crackinganddeformationcausedbybasestress.

ProductApplications

PackagingSpecification

Applicable to waterproofing of underground projects and concrete roofing projects on industrial and civil buildings.

25Kg/barrel

MethodofApplication

oBase treatment: the base should be solid and flat, with no dust or oil stains.Uneven and plate seam platformsshouldfirstbepolishedandrepaired.
·Detailed additional layer application: The inside and outside corners, application joints and other additional layers should be reinforced using non-woven fabric. Firstly, apply a layer of coating on the details, and lay a non-wovenreinforced additional layer before the coating surface is dry;apply another layer of coating on the non-wovenfabricsurfaceaftercompacting.
· Large surface coating application: Mechanical spraying is advised (roll coating method can also be used); a "criss-cross" spraying method should be used; each time the wet film thickness should not exceed 1.0mm to maintainuniformity,withnoexposed bottom oraccumulationof material.
?After the first coat is dry,the second can be applied, with the third coat applied after the second is dry (the amountusedfor the thirdcoatingshouldbecontrolledaccordingto thedesignthicknessandthe actual thickness measured on site).After the coating is dry and accepted after inspection, the membranes can be laid.

Packaging,Transportation,andStorage

?The product should be stored in a dry,well-ventilated place away from direct sunlight at a temperature between 5°℃and40℃.
?This product has a storage period of one year under normal transportation and storage conditions from the date of production.Expired products must not be used until they pass re-inspection.

Water-based Weather-resistant Rubber Asphalt Waterproof Coating

Model:LS-E509

ProductOverview

Theproduct is a single-component waterproof coating that ismadefromwater-basedemulsified asphalt and modifiedwithpolymerrubber latex andvarious special functionaladditives.It has thebenefitsofenvironmental protectionandconstructionconvenienceofwater-basedpaintwithexcellentweatherresistance.Awaterproof coating with strong adhesion is formed after the application,whichhasstrong adaptabilityto the deformationof the base layer and can effectively solve the issue of water seepage.It is suitable forrepairingroofs of any shape.

ProductFeatures

·Single-component product, ready-to-use upon opening,andeasytoapply; oWater-based and solvent-free, suitable for cold application, and seamless waterproof layers; °High solid content, fast drying, and suitable for applicationondampbasesurfaces;

oHigh elasticity and excellent resistance to cracking and deformation caused by the base surface stress; oThe product is heat-resistant and weather-resistant, and is reinforced by non-woven fabrics，making it suitableforuseasanexposedwaterprooflayeron concreteroofsandforrepairwork.

ProductApplications

oThe product is widely used in waterproofing and moisture-proofing projects, including roofs,exterior walls, balconies, gutters, basements, and more. lt is particularly suitable for irregularly shaped roofs and exposed roofrenovationprojects.

o It is not recommended for use in drinking water tanks or aquaculture water storage projects.

ApplicationPoints

oBase surface treatment:The base surface should be solid and flat without dust and oil stains.Any uneven areas or misaligned joints should be ground smooth and repaired as necessary.

oApplicationofdetailedadditionallayers:Additionallayerslikeinternalandexternalcornersandconstruction joints should bereinforced withnon-wovenfabrics.Firstly,detailed joints should be applied a layer of coating. Secondly，thereinforcingadditionallayerofnon-wovenfabricshouldbeplacedbeforethecoatingsurface dries.Finally，another layer of coating should be applied to the surface of the non-woven fabrics after the additionallayeriscompletelyadhesiveandfirm.

?Application of large-area coating: Mechanical spraying is highly recommended (roller application is also acceptable).Cross spraying should be adopted with the wet film thickness of eachcoatingnot exceeding 1.0\mathsf{mm} and aneven applicationwithout exposure of thebase materialandaccumulationshould be maintained.

·Subsequent coating: Once the first coating has dried, apply the second one. After the second coating has dried,please apply the thirdone(the amountfor thethirdcoatingshouldbecontrolledbasedonthe designed thickness and the actual measured thickness on-site).Proceed to the next steponly after the coatinghasdriedandpassedinspection.

Polymer Modified Asphalt Waterproof Coating

Model: JH-J400

ProductOverview

This product is a new eco-friendly water-emulsified asphalt waterproof coating, based on scientifically formulated with high-quality emulsified asphalt, with a variety of selected polymer emulsions as composite modifiers.After curing at room temperature，the product will form a layer of seamless, elastic waterproof membrane on the substrate. lt can be used not only by itself, but also in combination with a waterproof membrane to form a reliablecompositewaterprooflayer.

ProductFeatures

o Good infitration for the base, high bond strength. oHighelasticity to adapt to structuraldeformation under dynamic loading. High solid content; fast drying; improves construction speed while ensuring waterproof quality.

^\circ Suitable for spray coating and roller coating, forming aseamlesswaterproof layer. ^\circ Water-basedproduct,safeandreliable. ^\circ Single-component, cold application, simple operation.

Scope of Application

Non-exposed waterproof protection of rooftops and underground buildings, surface protection and corrosion preventionofvariouspipesandconcrete.

MethodofApplication

Base cleaning \rightarrow Detailed additional layer application \rightarrow First coating application \rightarrow Second coating application → Third coating application (if necessary) \longrightarrow Acceptance inspection \longrightarrow Next process.

oThe base surface should be flat, firm, and free of visible water, oil stains, and floating dust. lf the base surface does not meet the requirements,it should be cleaned or repaired first; the temperature of the application environmentshouldbebetween5°Cand 35°C
oThe coating can be used immediately. It is recommended that it is used straight from the barrel within 12h,and should not be left to stand for too long;
·The base should be thinly coated multiple times; 2 to 3 times is the suggested amount. Matrix reinforcement materials (such as non-woven fabrics) need to be paved at detailed connecting nodes such as internal and external corners,pipe roots and water outlets; the coating should penetrate the matrix without any wrinkles or warping;
° When painting a large area, facade application should be carried out first, followed by graphic application. Each coat can only be applied after the drying of the previous coating layer, and no water or other solution is allowed to impact the waterproof layer before the coating layer is dry;
oAfter the coating layer is completed to the thickness required by the design,the water storage test can be carried out; the protective layer can be applied after the test is completed.

LESSO FlexibleWaterproof Slurry

ProductOverview

The product is a cement-based waterproof coating modified by two-component polymer. lt is composed of polymer emulsion, high-quality cement, graded aggregate， and powder prepared with selected additives. When the liquid and powder materials are mixed in a specific proportion,a flexible waterproof coating is formed after the application. This coating has a good affinity with concrete and mortar, and can form a tight and firm bond with them toprevent water penetration thusachieving anexcellentwaterproofingeffect.

ProductFeatures

oThe product has good flexibility,and strong adhesive force to the base surface;

· Good bonding,and outstanding waterproofing performance;

· The product can be applied on wet surfaces for its convenient application.

ProductApplications

The product is suitable for waterproof and moisture-proof treatment of the floors in bathrooms,kitchens, balconies and otherplaces,aswellas waterproof andseepageresistance of water tanks andswimmingpools.

ExecutiveStandard

PackagingSpecification

Type Il of the recommendatory industrial standard JC/T2090-2011

18kg/barrel

ReferenceAmount

When the thicknessof awaterproof layeris approximately 1.0 \mm theconsumptionis 1.5 \mathsf{kg}/\mathsf{m}^{2} 2.0\kg/\mathsf{m}^{2} (The actual consumption depends on the actualcondition of the base surface and the required thickness of the waterprooflayer).

LESSO GeneralWaterproof Slurry

ProductOverview

The product is a two-component cement-based waterproof slurry made from high polymer emulsion.It has a certainpenetrationeffectonconcrete，andformsadenserigidcompositewaterproofcoatingonthebase surface after the application,soit is suitablefor moisture-proof andwaterproof treatmentofkitchens,bathrooms and floor walls. The product is featured by high adhesive strength,good impermeability, and easy tiling.

Product Features

·Effective prevention of missing coating:colorful coating,and evident waterproofing effect; ° High adhesive strength to the base layer; · Good impermeability for strong waterproofing;

° Easy tiling: After the coating is dry and cured, tiles can be directly adhered or plastered for leveling; 。The product is a water-based coating with non-toxic, harmless, odorless, safe and environmentally friendly features.

Product Applications

° The product is suitable for moisture-proof, ant-seepage, and waterproof treatment of kitchens， bathrooms, flor walls, and others;

o The product can be used for base preparation for waterproofing and seepage prevention in basements, tunnels, swimming pools and others;

oThe product can be applied in cement concrete structures, cement plastering for base preparation, brick walls and lightweight brick wall structures.

ExecutiveStandard

PackagingSpecification

Type | of the recommendatory industrial standard JC/T2090-2011

16Kg/barrel

ReferenceAmount

Whenthethicknessofawaterprooflayerisapproximately 1.0 \mathsf{mm} theconsumptionis 1.5\kg/m^{2} to 2.0\kg/\mathsf{m}^{2} (Theactualconsumptiondependsontheactualconditionofthebasesurfaceandtherequiredthicknessofthe waterprooflayer).

LESsO Transparent Waterproof Liquid for Exterior Walls

Model:LS102S

ProductOverview

Thetransparent waterproof liquid forexterior walls isa transparent waterproof product formulated with the special emulsion as the base material, and various additives.The product has strong adhesion to the base layer, good film-forming and sealing properties, as well as excellent weather resistance. It can be directly applied to the base layers of ceramic tiles, cement mortar， coatings， etc.，and can effectively reduce the risk of waterseepageontheexteriorwallsquickly.

ProductFeatures

oExcellent flexibility to resist small cracks caused by thedeformationof base layer;

^\circ Superior water resistance，low water absorption,and resistancetoblushingwhensoaked inwater; ° Convenient application for ready to use upon opening.

。Outstanding weather resistance，and chalking resistance;

ProductApplications

o The product is suitable for surface leakage prevention of building exterior walls, concrete, ceramic tile surfaces,andwallpaint surfaces;

。The product is suitable for leakage repair of localized small cracks on wall, door and window frames, and otherareas.

ExecutiveStandard

Packaging Specification

The company standard Q/LSJJ 04-2022

5Kg/barrel

Reference Amount

The estimated consumption for two coats of application is approximately 0.2k\mathtt{g}/\mathsf{m}^{2} to 0.5 \mathsf{\kg}/\mathsf{m}^{2} Theactual consumption mayvary accordingto the density andcompactionof thebase material.

LESSOScoredWall Surface Bonding Agent

Model: LS130

Product Introduction

LESSO scored wall surface bonding agent is formulated with high-quality polymer compositeresin emulsion.The productboasts exceptionalbonding strength with cement bases,and enhances the durability of concrete bases with its excellent sealing property，solid roughening,and superior moisture proofing.

PerformanceFeatures

°Highly efficient sealing, and integrated property of moistureproofing and reinforcement;

° Simple and convenient application;

。 High roughening property, and enhanced bonding strength of the base layer;

Product Applications

The product is mainly used for sealing and moisture proofing of concrete floors, brick walls and smooth cement walls to create rough surfaces, which strengthens physical bonding performance and prevents detachment or peeling.

ExecutiveStandard

Packaging Specification

Type 1 of the recommendatory industrial standard JC/T907-2018

18kg/barrel

UsageAmount

1kgofemulsioncanbeappliedtoanareaof about10to15squaremeters(foronecoating).Theactual consumptionvariesdependingonvariousfactors in theconstruction.

LESSO Super Strong Ceramic Tile Adhesive

Model:LS721S

ProductOverview

LS721S super strong ceramic tile adhesive is made of high-quality cement as the inorganic cementing material, refined graded sand as the aggregate,and various polymers and functional additives.The product can be useddirectlyaftermixingwithwater.Withstrongadhesion,itcanensurethelong-lastingandfirmtilingofthe tileswithlowwater absorption,andcreate two-waybonding between thebase layersand the tiles,effectively preventing hollowing and cracking of the tiles.Quick application can be carried out without soaking tiles and wetting walls because tiles adhered are not easy to falloff，and the adhesive layer is thin,saving time,labor, andmaterialsduring theapplication.Theproductissuitableforboth interior andexteriorwalls.

ProductFeatures

oWith super strong adhesion, the product is less prone to cause hollowing issues;

^\circ Easy adjustment and kneading, and space saving in case of thin-layer application;

oExcellent waterretention，andgoodweather resistance;

ProductApplications

oThe product is applied to waterproof coatings on concrete, cement rendering, concrete slabs, plastered brick surfaces and polymer cement; it is not suitable for external insulation base layers.

oThe product is suitable for facing tiles on interior walls that have a water absorption rate of \lesssim0.3% anda singletilesizeof 800mmx800mm andidealforexternaltilesonexteriorwallsthathaveawaterabsorption rateof \lesssim0.3% andasizeof 300mmx600mm It isrecommendedtouseit incombinationwiththe tile adhesive,which can enhance the adhesive strength of the product.

ExecutiveStandard

Packaging Specification

Type C2 of Adhesives for Ceramic Tiles (JC/T 547-2017）20Kg/b

ReferenceAmount

Powder: Water ratio =20{\sf K}{\sf g}{:} 4 to 5Kg

Approximate application area (square meters)
4.5-5m²
2.5-3m2
2.2-2.5m2

Note: The application area is an approximate value depending on the surface conditions, the size of the finish, and the installation process.

(CHINA LESSO, STOCK CODE: 2128.HK)

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