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Polyether Polyols & PU Building Blocks
Polyether in customer production
MENGWEI supplies a polyether ingredient used in the customer’s formulation. This footage shows material being applied over a paper base.
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Polyurethane systems and specialty chemicals manufacturing
Polyurethane Systems & Specialty Chemicals
MENGWEI manufactures polyurethane systems, additives, polyols, coatings, and specialty industrial chemicals from Jinshan District, Shanghai for manufacturers across 20+ countries.
Raw Materials16 Years
MENGWEI
Shanghai
MENGWEI
20+ Countries
MENGWEI
Five focused product lines for construction, insulation, waterproofing, coatings, and industrial production.
Product Overview
MENGWEI MATERIALS
Customer applications
See MENGWEI materials at work in customer production and on site.
Filmed at customer sites using MENGWEI materials.
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Rigid Polyurethane Systems
Sandwich panel production
MENGWEI materials in use on a customer’s sandwich panel production line.
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Waterproofing & Protective Coatings
Grouting on site
Selected footage of injection work and material reaction at a customer site.
View related productsA manufacturing partner for buyers who need stable supply, precise documentation, and technical communication.
Why MENGWEI
Technical Service
Application guidance, sample evaluation, and formulation tuning from inquiry through scale-up.
16 Years Manufacturing
Founded in 2010 with 186 employees and a production culture built around exacting tolerances.
Flexible Orders
Support for trial quantities, recurring production, private-label needs, and export documentation.
One-Stop Sourcing
Systems, polyols, additives, catalysts, coatings, and auxiliary chemicals from one accountable team.
Application-focused chemistry
Materials that fit your process
From insulation production to protective coatings, MENGWEI brings systems, raw materials, and formulation support together around your application. Start with your equipment, substrate, and target performance; build the material specification from there.
Sandwich panels & cold-chain insulation
PUR/PIR systems for sandwich panels, plus spray foam and pipe insulation options. Discuss foam density, reaction profile, line conditions, and insulation requirements to match the system to your process.
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Building waterproofing & leak repair
Single- and two-component PU coatings and hydrophilic or hydrophobic grouting resins for roofs, basements, joints, and concrete cracks. Select according to substrate, water exposure, and application method.
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Polyurea for protective linings
Pure and hybrid polyurea spray systems for pools, tanks, and infrastructure protection. Review surface preparation, spray equipment, film thickness, and service conditions when specifying a coating system.
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Flexible foam & formulation ingredients
Flexible polyether and POP polyols, catalysts, silicone surfactants, and other PU additives for mattress and furniture foam formulations. Balance processing, cell structure, and target comfort properties through sample evaluation.
Explore materialsFrom selection to supply planning
Discuss formulation targets, evaluate samples under your processing conditions, and review TDS/SDS documentation before planning trial or repeat orders. Final performance and suitability should be confirmed through application testing.
About MENGWEI
Our Story
Founded in 2010, Shanghai Mengwei Polymer Materials Co., Ltd. began with a focused vision: to build a polyurethane manufacturer that combined the technical depth of European chemistry leaders with the agility, scale, and partnership culture that international customers actually need from their supply chain.
About MENGWEI →MENGWEI by the Numbers
2010
Year Founded
16
Years of Manufacturing
186
Team Members
20+
Countries Served
5
Product Families
Shanghai
Jinshan District Facility
MENGWEI POLYMER MATERIALS
Our office and collaboration spaces
Explore the MENGWEI workplace, from reception and work areas to meeting rooms and material displays.
Reception · Workspaces · Meeting rooms · Material displays
A connected workspace
Reception, meeting rooms and work areas arranged around a clear central passage.
From samples to applications
A smaller discussion setting keeps material samples close to the conversation.
Materials in perspective
Foam blocks, panel sections and coating swatches illustrate the connection between materials and their uses.
R&D and Custom Formulation
In-house formulation support helps tune reactivity, viscosity, open time, adhesion, hardness, and field performance for exact application conditions.
01
Define performance targets
02
Bench formulation and sample
03
Validate application behavior
04
Scale and document supply
Customer Stories & Application Examples
Cold Storage Panel Manufacturing
“We stopped baby-sitting the line every time the weather changes.”
- Production Manager, Indonesia
Construction Chemicals Distribution
“One supplier, five products, one set of documents. That changed how we run procurement.”
- Commercial Director, Brazil
MS Sealant Manufacturing
“The bar was: do not compromise our product. MENGWEI cleared it.”
- R&D Manager, Malaysia
MS Sealants for Construction
Application example
Illustrative narrative, not an actual customer testimonial.
“We value more than a material recommendation: we value an application-led conversation. MENGWEI's approach to MS polymer selection and formulation support is the kind of product and service value we look for in a supplier.”
- Illustrative customer perspective, Thailand
Spray Foam Insulation Contracting
“They formulated for our conditions, not for a European test bench.”
- Operations Director, United Arab Emirates
Cold Chain Infrastructure
“Predictability is the product, as much as the chemistry is.”
- Project Manager, Bangladesh
From the ports of Shanghai and Qingdao to customers on five continents.
Where MENGWEI Ships
Global overview
Global connections
Drag the globe to explore. Select a country and destination to follow a route.
Nearby countries / regionsChina · South Korea · Taiwan
Geographic illustration only. Actual port calls, routes, transfers and delivery arrangements are confirmed per sailing and order. Country and region labels describe geography.
Ready to discuss a formulation or supply plan?
Share your application, target performance, packing, and destination. Our technical team will respond with a practical next step.
Quality & Certification Support
ISO 9001
Full company quality management system
REACH
Available for selected products
CE
Available for selected products