Paper Coloring Agent
Paper coloring agents provide vivid, uniform, and lasting shades for paper and paperboard. Our range includes basic, direct, and acid dyes for diverse papermaking needs.
Tianjin Chemsum New Materials
Paper Chemicals That Solve Problems On The Machine, Not In The Brochure
Sizing, colouring, strength, barrier and water treatment chemistry for neutral and alkaline papermaking - supplied from Tianjin since 2005.
- Since 2005
- 30 products, 5 ranges
- Neutral and alkaline systems
- Fluorine-free barrier grades
- Tianjin Free Trade Zone
What we supply
Five Ranges That Cover The Wet End And The Size Press
From pulping through sizing, colouring and strength to the water treatment that keeps a closed loop workable - one supplier, one technical contact.
Paper Functional Agent
Paper Functional Agents are essential chemical additives designed to improve the overall performance, appearance, and processing efficiency of paper and paperboard products.
Paper Sizing Agent
Enhance paper performance with our high-quality paper sizing agents, including AKD, ASA, and surface sizing chemicals—improving water resistance and printability.
Paper Strength Agent
Enhance paper strength and durability with our paper strength agents—improving fiber bonding, dry and wet strength for high-quality, sustainable paper.
Water Treatment Chemicals
High-performance water treatment chemicals for purification, coagulation, and scale control—ensuring clean, efficient, and sustainable water systems.
Paper grades
Chemistry Chosen By What You Are Making
The same product behaves differently on kraft board and on tissue. Start from the grade and the shortlist narrows fast.
Where mills get stuck
Four Problems We Get Called About Most
01
Building An AKD Sizing Programme
Choosing between buying wax, buying emulsifier, or buying a ready emulsion - and making the curing work either way.
02
Colour Selection And Shade Control
Picking basic or direct chemistry by furnish, then holding the shade batch to batch.
03
Moving To Fluorine-Free Oil Barriers
Replacing fluorinated barrier coatings on food contact paper without losing grease resistance.
04
Wet End Retention And Water Treatment
Keeping fines, fillers and dye in the sheet, and keeping the water loop clean enough that they stay there.
Selected products
Eight Grades That Cover Most First Enquiries
Every one of the 30 products has its own page with the full feature and application detail.
Liquid AKD
Not every mill wants to run its own emulsification plant.
AKD Wax
Emulsifying your own AKD only pays if the wax purity and particle size are consistent.
Basic Black Dyes
Deep black on mechanical pulp needs a dye with real affinity for lignin, or the shade washes out into white water.
Direct Red Dyes
Red dye lost to white water is red dye paid for twice.
Wet Strength Agent
Tissue, towel and liquid packaging have to hold together wet, which dry strength chemistry cannot do.
Fluoride-Free Oil Proof Agent
PFAS restrictions are closing in on fluorinated barrier coatings for food contact paper.
Retention and Drainage Aid
Every point of first-pass retention lost is filler and fines paid for and thrown away.
PolyDADMAC
Anionic trash in a closed loop drags down retention and drainage at the same time.
Since 2005
A Paper Chemicals Supplier, Not A Catalogue Reseller
CHEMSUM supplies the wet-end and surface chemistry a paper mill runs on - AKD and rosin sizing, basic and direct dyes, dry and wet strength resins, retention and drainage aids, oil-proof barriers and water treatment polymers.
CHEMSUM operates a modern production base with an R&D team and a quality management system behind it. The portfolio covers papermaking additives, pulping aids, sizing agents, dyeing auxiliaries, dry-strength agents and wastewater treatment chemicals.
The corporate philosophy is “Achieving Excellence and Mutual Benefit” - which in practice means the technical conversation comes before the price list.
How we work
Our Business Philosophy
Transparency Builds Trust
Open communication and clear processes, so every customer stays informed from first enquiry through to delivered drums.
Efficiency Drives Success
Streamlined operations and on-time delivery, so a trial run is not held up waiting on chemistry.
Partnership Fuels Growth
More than a chemical supplier - a partner committed to helping mills expand and hit their own quality targets.
Knowledge centre
Technical Guides From Our Application Team
Eco-Friendly Oil Proof Agents for Food and Packaging Paper
As the demand for sustainable packaging continues to rise, paper manufacturers are facing new challenges—especially in creating packaging that can resist oil, grease, and moisture without co...
Enhancing Paper Appearance and Brand Value with High-Performance Paper Dyes
Color is not just about appearance—it’s a key element in product differentiation and brand identity. In modern papermaking, paper dyes play a vital role in achieving uniform color shades, en...
Optimizing AKD Sizing for Better Paper Strength and Water Resistance
Alkyl Ketene Dimer (AKD) is a widely used internal sizing agent in modern papermaking. It reacts with cellulose fibers to create hydrophobic bonds that prevent paper from absorbing water and...
Tell us the grade and the problem, not just the product code
Send your paper grade, machine speed, furnish and the property you are chasing. You get a product shortlist and a dosage starting point, not a catalogue.
Frequently Asked Questions
Which products suit neutral and alkaline papermaking?
The AKD range - AKD Wax, Liquid AKD, AKD Emulsion, AKD High Polymer Emulsifier and AKD Curing Agent - is built for neutral and alkaline systems. Cationic Rosin Sizing Agent covers acidic to weakly neutral systems instead.
Do you supply fluorine-free oil proof agents?
Yes. The Fluoride-Free Oil Proof Agent is based on bio-based waxes, silicone and polymer emulsions, with no fluorochemicals, for food packaging and disposable food service paper.
How do I reach your technical team?
WhatsApp or email [email protected]. Messages are answered Monday to Friday, 9:00 - 17:30 (GMT+8).
Where do you ship from?
Tianjin Free Trade Zone (Dongjiang Comprehensive Bonded Zone), Tianjin, China.