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Premium PVP & NVP Solutions from China

Hangzhou Weitong Nanomaterials Co., Ltd. is a leading manufacturer of N-vinylpyrrolidone (NVP) and polyvinylpyrrolidone (PVP) series products. With over 20 years of experience, we deliver high-purity excipients for pharmaceuticals, food, cosmetics, and industrial applications.

PVP Production

About Weitong Chem

Weitong Factory

Innovating Polymer Chemistry Since 2015

Founded in 2015, Hangzhou Weitong Nanomaterials Co., Ltd. is committed to excellence in the production of N-vinylpyrrolidone and downstream PVP series products. Our enterprise spirit of "integrity, innovation, dedication, and cooperation" drives us to deliver high-quality nanomaterials to global markets.

Our factory adopts a strict quality management system to ensure that all products meet international standards. With a strong technical team and continuous R&D investment, we have developed advanced processes in polymer synthesis, dehydration control, and acetylene compression.

2015+
Founded
300+
Employees
100+
Partners
20+
Years Experience

Our Production Capacity

5000 Tons
NVP Annually
2000 Tons
PVP K Series
1500 Tons
Copovidone
1000 Tons
Cross-linked PVPP

Our Main Products

We offer a comprehensive range of high-purity excipients and raw materials for diverse industrial applications. All products are manufactured under strict quality control and meet international pharmacopeial standards.

Copovidone

Copovidone

CAS: 25086-89-9

A copolymer of vinylpyrrolidone and vinyl acetate, used as a binder in pharmaceutical formulations.

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Povidone K30

Povidone K 30

CAS: 9003-39-8

Highly water-soluble polymer used as a binder, stabilizer, and thickener in pharmaceuticals and cosmetics.

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N-Vinylpyrrolidone

N-Vinyl Pyrrolidone

CAS: 88-12-0

Key monomer for producing PVP and its derivatives. High purity for industrial and pharmaceutical use.

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Crospovidone

Crospovidone XL

CAS: 25249-54-1

Superdisintegrant used in tablets to ensure rapid disintegration and dissolution.

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Povidone K90

Povidone K 90

CAS: 9003-39-8

High molecular weight PVP used in adhesives, coatings, and as a thickening agent.

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Povidone Iodine

Povidone Iodine

CAS: 25655-41-8

Broad-spectrum antiseptic used in healthcare and wound care products.

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N-Methyl-2-pyrrolidone (NMP)

CAS: 872-50-4

Polar solvent used in electronics, pharmaceuticals, and polymer processing.

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1,4-Butanediol (BDO)

CAS: 110-63-4 | Purity: 99.7%

High-purity BDO used in the production of polyurethanes, plastics, and solvents.

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PVP VA64

Povidone Vinyl Acetate Copolymer

Used in sustained-release formulations and as a film-forming agent.

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PVP Conductive Slurry Dispersant

Ultra-low Moisture Grade

Specialized for lithium-ion battery electrode manufacturing.

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Key Applications

Pharmaceutical

Used as binders, disintegrants, stabilizers, and in sustained-release formulations. PVP and Copovidone are essential in tablet manufacturing.

Industrial

Applied in adhesives, coatings, inks, and as dispersants in ceramic and pigment industries.

Personal Care

Found in hair sprays, gels, and skincare products for film-forming and stabilizing properties.

Food & Beverage

Used as a clarifying agent in beverages and as a carrier for flavors and colors.

New Energy Battery

PVP-based dispersants improve electrode homogeneity and conductivity in lithium-ion batteries.

Membrane Industry

Used in membrane casting for water treatment and separation technologies.

Why Choose Weitong Chem?

Direct Factory Pricing

Eliminate intermediaries and enjoy cost-effective solutions without compromising quality.

Innovation-Driven

10+ patented technologies and a state-certified lab ensure consistent, high-quality PVP products.

Efficient Production

Large-scale capacity with fast turnaround times and reliable supply chain.

Dedicated Support

Our team provides technical guidance, documentation, and responsive customer service.

5000+
Tons of NVP Produced Annually
60+
Product Variants Available
50+
Countries Served
99.9%
Customer Satisfaction Rate

Frequently Asked Questions

What is the difference between PVP K30 and K90?

PVP K30 and K90 differ in molecular weight. K30 has lower viscosity and is used in fast-dissolving tablets, while K90 has higher viscosity and is used in sustained-release formulations and adhesives.

Is Copovidone safe for pharmaceutical use?

Yes, Copovidone is approved by major pharmacopeias (USP, EP, JP) and widely used as a binder in oral solid dosage forms due to its excellent solubility and stability.

Can I get samples before placing an order?

Yes, we offer free samples for evaluation. Please contact us through the official website to request product samples.

What certifications do you have?

We operate under a strict quality management system. Our products comply with ISO, USP, EP, and other international standards. Full documentation is available upon request.

Do you offer private labeling or custom packaging?

Yes, we support OEM/ODM services, including custom packaging, labeling, and formulation adjustments based on client requirements.

Get in Touch

For inquiries, samples, or technical support, please visit our official website to contact the Weitong Chem team.

Visit Official Website to Contact
Email
sales@weitongchem.com
Phone
+86 159 5711 3754
Location
Hangzhou, China

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