What is the difference between PP and K12 / A45?

PP is an ultra-thin feather-finish skim coat (1-20mm) for cosmetic smoothing and fine repair, giving a silky paint-ready surface. K12 is a rapid-hardening repair mortar (2-20mm) for structural floor/wall patching at 45 MPa. A45 is a fast-setting anti-sagging repair mortar for thicker emergency repairs. Choose PP when the priority is a smooth finish; choose K12 or A45 when load-bearing repair is needed.

Ultra-Thin Feather Finish Rapid-Hardening Skim Coat

Name: Ultra-Thin Feather Finish Rapid-Hardening Skim Coat
Brand: Shanghai Languan New Building Materials Co., Ltd
SKU: 1996750681

Shanghai, ChinaShanghai Languan New Building Materials Co., Ltd

US$16.80

200 Sets

Sample price:US$0.00/bag.Request sample

Product profile

Customization

Available

Application

Commercial Construction, Industrial Construction, Residential Construction

Color

Gray

Model NO.

Setting Time

Fast-Setting

Special Additives

Fiber-Reinforced, Shrinkage-Reducing

Type

Repair Mortar

Pot Life

15-25 Minutes (at +23°C)

Drying Time

40-60 Minutes

Compressive Strength

≥40 MPa at 28 Days

Flexural Strength

≥10 MPa at 28 Days

Shelf Life

12 Months

Transport Package

Pallet

Specification

20 kg / Bag, 5 kg / Pail

Trademark

Lan Guan

Origin

China

Key features

Ultra-thin feather finish: delivers a smooth, silky surface that blends seamlessly into surrounding concrete and mortar, ideal for cosmetic repairs.

Rapid drying 40-60 min: surface dries quickly, allowing paint, tile or resin flooring work to continue on the same day.

Thixotropic anti-sag formula: stays in place on vertical walls and ceilings without slumping, reducing rework and material waste.

28-day compressive strength >= 28 MPa: provides sufficient structural integrity for floor, wall and pavement repairs.

Bond strength >= 2.0 MPa: forms a durable, high-adhesion layer that resists peeling and dusting on multiple substrates.

Low-shrinkage, crack-free surface: formulated to minimize drying shrinkage and keep repaired areas stable over time.

Interior & exterior repairs in one: suitable for concrete floors, walls, ceilings, stairs, terraces, pavements and pre-flooring prep.

Single-component, just add water: easy on-site mixing with no separate liquids or complex ratios to manage.

SPremium base for paint, tile & resin: creates a uniform, dust-free substrate that improves topcoat adhesion and finish quality.

Low-VOC, eco-friendly formula with OEM support: meets green building requirements and supports private-label packaging for distributors.

Company profile

High Repeat Buyers ChoiceFast DeliveryFull CustomizationQuality Assurance

Shanghai Languan New Building Materials Co., Ltd

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.08h

AI-Powered supplier vetting

SummaryShanghai Languan New Building Materials Co., Ltd. is described as a developer, manufacturer, and seller of environmentally friendly building decoration materials. Its stated scope covers building materials, floor-related solutions, machinery and equipment, hardware, chemical products, communication equipment, and import/export and technical services. The supplier reports OEM service for well-known brands, quality assurance, documented complaint-handling and corrective-action procedures, and facilities including mixing, self-leveling, and automatic packaging lines. However, it has no available SDK, no stated AI-based decision-management practice, no inventory capability, no overseas warehouse or showroom, and no valid manufacturing-capacity contract with affiliated subcontractors. Financial information is limited to years identified as 2021–2023 without performance values. Certification, customer cases, and detailed customization evidence are not sufficiently documented.

Supplier typeThe supplier is presented as Shanghai Languan New Building Materials Co., Ltd., focused on R&D, production, and sales of environmentally friendly building decoration materials. Its business scope includes building materials, insulation materials, sealing fillers, cement products, machinery, hardware, chemical products, and related sales and import/export activities, supporting classification as a building-material manufacturer and supplier.

After-Sales capabilityThe supplier reports clear procedures and records for corrective and preventive actions and customer complaint handling, and describes providing technical guidance and comprehensive customer services. However, it lacks overseas warehouse and showroom capabilities, so the evidence supports structured service handling but not broad overseas after-sales infrastructure.

R&D capabilityThe company describes R&D activity and the ability to develop new materials using existing technology, and its culture emphasizes innovation. However, it explicitly has no available SDK and has not established an AI model for big-data decision support; these limitations prevent a broad conclusion that its innovation capability exceeds requirements.

Production capacityThe supplier states that it conducts production and lists processing and manufacturing activities, with a mixing line, self-leveling production line, and automatic packaging robot. Quality assurance and documented corrective-action procedures are also reported, although there is no valid contract with affiliated subcontractors and no in-stock capability.

Customization capabilityThe supplier reports OEM services for well-known brands and says it provides solutions for difficult floors, technical guidance, and development of various new materials using existing technology. This directly supports some customization and OEM capability, although the slices do not specify product scope, minimum quantities, lead times, or engineering resources.

Product Q&A

Q:Can PP be used outdoors or in wet rooms?

No. PP is designed for dry interior walls, floors and ceilings only. It is not suitable for outdoor exposure, swimming pools, permanently wet areas or sub-zero temperatures. For wet areas, please use our G1 or G11 waterproofing systems first, then select the appropriate finish material.

Q:How soon can I paint or install flooring over PP?

PP is touch-dry in 40-60 minutes under standard conditions (+23C, 50% RH). Light sanding, painting or installation of resilient flooring (LVT/SPC/vinyl) can usually proceed after 2-3 hours. For natural stone, ceramic or heavy traffic, wait at least 24 hours.

Q:Is OEM and private labeling available?

Absolutely. We offer custom packaging, private labeling and OEM formulation. MOQ for custom packaging starts at 500 units per design. Provide your artwork or we can help design it. Custom color and work-time formulations are also negotiable.

Q:Can I get free samples for testing?

Yes, free samples are available for quality evaluation. Customers cover shipping cost. We also provide TDS, MSDS and EN 13813 test reports. For large projects, we can arrange video-call technical support and sample boards.

Q:What is the shelf life and storage requirement?

Shelf life is 12 months from production date when stored unopened in a cool, dry place (+5C to +30C). Keep away from moisture and direct sunlight. Once opened, use as soon as possible. The product is cement-based and will harden if exposed to moisture.