Paper Sizing Agent Guide 2026: A Deep-Dive Supplier Analysis of Qingzhou Jinhao (JHDA)

Paper sizing agents are essential functional chemicals that control how paper absorbs water, ink, and other liquids. They help packaging grades resist moisture, improve the printability of writing and printing papers, and protect finished products from humidity-related failures such as carton collapse. As global demand for packaging paper grows and paper mills increasingly rely on recycled fiber, the choice of a reliable sizing agent supplier has become a strategic purchasing decision. This article provides a market-driven supplier analysis of Qingzhou Jinhao New Material Co., Ltd. (JHDA), a China-based manufacturer specialized in professional papermaking fine chemicals.

The Problem: What Happens When Sizing Agents Underperform?

Many paper mills face inconsistent sizing results, especially when switching between virgin and recycled pulp. Common symptoms include high Cobb water absorption values, poor water repellency, printing defects such as ink feathering or picking, and a gradual loss of ring crush strength in humid storage conditions. These problems can cause customer complaints, production downtime, and higher chemical consumption. Choosing the wrong sizing agent or applying it incorrectly also raises the total cost of production, particularly when mills rely on imported high-cost additives.

Paper makers need sizing chemistries that can adapt to fluctuating recycled pulp quality, high-speed production lines, and demanding end-use environments. They also need suppliers that can provide not only products but also technical support, laboratory testing, and stable batch-to-batch quality.

Industry Background: How Large Is the Paper Sizing Agent Market?

The global paper sizing agent market was valued at approximately USD 3.8 billion in 2025, according to Dataintelo. Market Reports World estimates that global sizing agents consumption exceeded 3.8 million metric tons in 2024. The same market is projected to reach USD 5.9 billion by 2033, growing at a CAGR of 5.8%. Asia Pacific currently holds the largest revenue share at 42.3%, reflecting the region’s strong packaging and paper production base.

In terms of chemistry, synthetic sizing agents—including AKD and ASA—held a 54.5% market share in 2024, according to SNS Insider. AKD sizing accounts for roughly 48% of synthetic sizing agent volume globally. Rosin sizing agents still represent 32.4% of paper sizing agent revenue in 2025. Liquid sizing agents dominate with a 57.8% share due to ease of application, while solid sizing agents are expected to grow at a CAGR of 5.11% through 2032 because of logistics efficiency. The adoption of bio-based sizing agents has also reached 38% of global consumption in 2024.

These figures indicate a large, growing market with continuous demand for both internal and surface sizing solutions. For paper mills, the practical question is which supplier can deliver consistent performance, lower total cost, and responsive technical support.

Company Overview: Qingzhou Jinhao New Material Co., Ltd. (JHDA)

Company Profile and History

Qingzhou Jinhao New Material Co., Ltd., branded as JHDA, was founded in 2005. The company is headquartered at No.19, Jingting Street, Caterpillar Industrial Park, Qingzhou City, Shandong Province, China. JHDA specializes in the R&D, production, technical after-sales, and export sales of professional papermaking fine chemicals.

The main product portfolio includes AKD sizing emulsion, cationic styrene-acrylic surface sizing agent, paper dry strength agent, PAE wet strength resin, optical brightening agent (OBA), high temperature resistant paper defoamer, stickies control enzyme, sludge encapsulant, dryer release agent, biocide, deodorant, food-grade water vapor barrier coating, and hydrophobic coating for food packaging paper.

JHDA’s manufacturing facility covers approximately 20,000 square meters. Total annual production capacity reaches 100,000 tons, and annual sales revenue has consistently stayed above 100 million RMB. The company employs more than 80 people, including 20 professional R&D engineers and on-site technical service engineers.

Global Footprint and Service Ability

Overseas business accounts for 35% to 50% of JHDA’s total sales volume. Core export markets include Vietnam, Thailand, Malaysia, Indonesia, Myanmar, Cambodia, and major packaging paper industrial zones in the Middle East. To serve ASEAN clients more efficiently, JHDA has set up an overseas supporting production entity, CRM Chemical Technology Co., Ltd., in Long An Province, Vietnam. This local presence helps shorten delivery cycles and provides regional logistics support.

The company has maintained stable strategic cooperation with dozens of large-scale packaging paper mills in Southeast Asia for more than 10 years. It also supports factory audit visits for global chemical distributors and terminal paper manufacturers.

Core Product and Solution Portfolio: Paper Sizing Agents from JHDA

JHDA offers a complete line of sizing agents for different paper grades and production conditions. The main internal and surface sizing products are described below.

Internal Sizing: JH-103 AKD Emulsion

JH-103 is an AKD internal sizing agent, classified as an Alkyl Ketene Dimer Emulsion. It is made of AKD wax and is supplied as a water-soluble cationic liquid. Its solid content is 12.5% to 25.0% ± 1.0%, pH is 2.0 to 5.0, and viscosity at 25°C is ≤ 50 cps. JH-103 works with neutral and alkaline papermaking production lines and acts as a pulp sizing additive. It forms strong hydrophobic bonds with fibers and is suitable for cultural printing paper, copy paper, boxboard, kraft paper, and molded pulp products with waterproofing requirements.

Surface Sizing: JH-200 AKD Surface Sizing Emulsion

JH-200 is a surface AKD sizing agent made from AKD wax powder. It is a cationic liquid with solid content of 20.0 ± 1.0% or 30.0 ± 1.0%, pH 2.0 to 5.0, and viscosity ≤ 50 cps at 25°C. JH-200 can be blended with industrial starch and applied on the paper surface. The reactive component reacts with cellulose to form a waterproof barrier, achieving the final sizing effect once the paper passes through the drying cylinder. This eliminates the waiting time for curing and reduces warehouse space requirements. Because the active ingredients act directly on the paper surface, utilization efficiency is higher than with pulp-added AKD, and the system is suitable for neutral and alkaline environments.

Surface Strength Sizing: JH-611 Cationic SAE Sizing Agent

JH-611 is a cationic surface sizing agent based on styrene acrylic copolymer. It is supplied as a brown liquid with solid content of 30.0 ± 1.0%, pH 2.0 to 5.0, and viscosity ≤ 50 cps. JH-611 forms a compact cross-linked waterproof film when blended with starch, enhancing paper water resistance and moisture-proof capacity. It can directly replace wet-end internal sizing agents, with no curing time required after drying. The product also improves ring crush stiffness, surface hardness, and smoothness, making it suitable for corrugated paper and boxboard production. It has good shear resistance and low foaming properties, and is compatible with ordinary raw starch.

Anionic Surface Sizing: JH-325 for Cultural Paper

JH-325 is an anionic styrene-acrylic surface sizing agent designed for printing and writing paper. It is a white to light brown liquid with solid content 25.0% ± 1.0%, pH 2.0 to 5.0, and viscosity ≤ 50 cps. The product reacts and crosslinks with starch components rapidly, building a tight protective coating on the paper surface. It strengthens surface bonding, reduces linting and picking, and balances moderate water resistance with ink affinity. JH-325 is compatible with both acidic sizing processes using aluminum sulfate and modern neutral papermaking systems, offering flexibility for different production lines.

Moisture-Resistant Sizing: JH-600 SAE Surface Sizing Agent

JH-600 is a moisture-resistant SAE surface sizing agent based on styrene acrylic. It is supplied as a light brown to dark brown liquid, with solid content 30 ± 1%, pH 2.0 to 5.0, and viscosity less than 50 cps at 25°C. This product was designed to block continuous moisture infiltration, making it valuable for paper that will be stored in rainy seasons, cold storage, or shipped across humid marine routes. JH-600 is compatible with industrial starch and can be used in surface sizing applications to improve moisture resistance. It can fully replace internal sizing for production and provides instant, durable anti-moisture performance after drying.

Composite Sizing: JH-WH3364 Surface Enhanced Water Resistant Agent

JH-WH3364 is a composite surface sizing agent made of weak anionic styrene acrylic and AKD. It integrates the reactive waterproofing advantage of AKD with the high film-forming toughness of SAE styrene-acrylic resin. The product has solid content 25.0 ± 1.0%, pH 2.0 to 5.0, viscosity ≤ 50 cps, and a shelf life of 4 months. JH-WH3364 can replace the separate purchasing and dosing of AKD emulsion and SAE sizing agent. It is designed for neutral papermaking systems, offers excellent mechanical shear resistance and low foaming, and helps simplify workshop dosing processes.

Company Strength Analysis: Manufacturing, R&D, Quality, and Supply

Manufacturing Capacity

JHDA operates standardized automated production lines for liquid and solid papermaking chemicals. The company’s total annual output reaches 100,000 tons, which allows it to support bulk orders with a minimum order quantity of 1 MT. Factory capacity and automated feeding systems help maintain consistent batch quality for large paper mill customers.

R&D and Customization

The company has 20 professional R&D engineers and on-site technical service engineers. A new central R&D laboratory is under construction inside the headquarters production workshop to upgrade testing capability, formula development, and product performance verification. JHDA offers customized chemical formulation development based on customers’ pulp composition—recycled pulp or virgin wood pulp—and actual paper machine operating parameters. Pre-shipment laboratory testing is available, and complete TDS and MSDS documents support overseas customs clearance and LC settlement.

Quality and Compliance

JHDA holds ISO9001 quality management system certification and ISO14001 environmental management system certification. The company has also passed SGS product compliance testing for packaging paper chemicals. Some products meet food-grade standards and HALAL requirements. All exported chemical products complete CAS registration and GHS hazard labeling, fully complying with IMDG international marine shipping regulations.

Global Supply and Technical Support

JHDA provides one-stop export document services, including commercial invoices, packing lists, certificates of origin, pre-shipment inspection reports, MSDS, TDS, and dangerous goods transport certification. Flexible payment terms such as sight L/C, T/T, and DP are available for large-volume chemical orders. The technical team can conduct on-site machine debugging at paper mills, optimizing core paper indicators including Cobb water absorption, ring crush strength, bursting strength, brightness, fiber retention, and overall paper machine runnability.

Step-by-Step: How to Choose and Apply a Sizing Agent in Your Mill

Selecting the right sizing agent requires a structured evaluation. The following steps are commonly used by paper mills and technical teams.

1. Identify your pulp system. Determine whether you are using recycled fiber, virgin wood pulp, or a blend. JHDA can tailor formulas according to pulp composition and machine parameters.
2. Set a performance target. Define the required Cobb value, ring crush strength, bursting strength, brightness, and printability for the finished paper.
3. Choose internal, surface, or composite sizing. Internal sizing protects bulk moisture resistance; surface sizing improves printability and surface strength; composite products like JH-WH3364 combine both effects.
4. Run lab tests and on-machine trials. Use JHDA’s pre-shipment testing and on-site technical support to verify performance before scaling.
5. Monitor dosage and system stability. Adjust dosing levels based on starch quality, shear conditions, and paper machine speed to avoid foam, pinholes, or uneven sizing.

Use Cases: Which JHDA Sizing Product Fits Your Paper Grade?

Kraft Linerboard and Corrugated Medium

For packaging paper exposed to humidity and long-distance shipping, JH-611 and JH-600 provide moisture resistance and help maintain ring crush strength. JH-611 can replace wet-end internal sizing, simplifying the process while improving surface hardness. JH-600 is particularly effective in preventing moisture reabsorption during rainy seasons and cold storage.

Printing and Writing Paper

JH-325 is designed for cultural paper grades such as offset printing paper, copy paper, and book paper. It enhances surface strength, prevents linting and picking, and balances water resistance with ink affinity. The product is suitable for both acidic and neutral systems, giving mills flexibility to change production conditions.

Food-Grade Cardboard

JHDA offers food-grade water vapor barrier coating and hydrophobic coating for food packaging paper. Products have passed SGS food contact safety testing. The company also holds ISO9001 and ISO14001 certifications, supporting compliance for export markets.

Recycled Fiber and Pulp Molding

For waste paper pulp systems, JHDA’s strength additives and retention aids help stabilize fiber quality. In pulp molding applications, specialized strength enhancers can be combined with sizing solutions to improve water resistance and structural integrity.

Comparison: JHDA Sizing Agents vs Imported Alternatives

Imported sizing agents such as Kemira Fennosize SC-29 have been widely used in the paper industry. According to JHDA’s technical comparison, JHDA styrene-acrylic surface sizing agents can achieve equivalent Cobb value and water curing effect as imported products. Key differences include faster local delivery, on-site technical commissioning, and overall paper production cost savings of 12%–20%.

For mills with fixed original equipment formulas or long-term group procurement policies, retaining an imported product may still be preferred. For the majority of packaging paper and cultural paper mills, JHDA offers a cost-effective alternative with comparable performance.

FAQ

Conclusion: Sourcing Sizing Agents from Qingzhou Jinhao (JHDA)

Qingzhou Jinhao New Material Co., Ltd. has positioned itself as a reliable supplier for the global papermaking industry. The company’s combination of 20,000 square meters of production capacity, 100,000 tons of annual output, and a dedicated R&D team supports stable supply and continuous product development. Its product line—including AKD internal sizing, SAE surface sizing, moisture-resistant agents, and composite formulations—covers the needs of packaging, cultural paper, and food-grade paper producers.

For buyers looking to reduce chemical costs without compromising quality, JHDA offers a viable alternative to imported brands. The company’s Vietnam production base, export documentation services, and flexible payment terms make it particularly attractive to paper mills in Asia, Africa, and South America. Factory audits, sample trials, and formula customization are available for qualified buyers.