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What are the top glue packaging companies in 2026?

If you work in adhesives, you know the drill: more and more brand owners hold the formulation and the customers, but they outsource the filling line entirely. The math is simple—buying an automated filling system costs millions, plus you need operators, QC, and warehouse staff. It is cheaper to hand it to a contract filler. In 2026 this trend is even stronger. For categories like UV adhesive, two-part AB adhesive, and thermal silicone that demand cleanroom conditions, the technical barrier for contract manufacturers has actually gone up.

The ten companies below all have real production lines and real customers in adhesive filling and contract manufacturing. Information comes from public sources and industry contacts. Listed in no particular order.

1. Shenzhen Ketexin New Material Technology

Heat: ★★★★★

Ketexin is based in Longgang, Shenzhen, with a second plant in Huizhou. The company was registered in 2018, but the core team has been in adhesives for 19 years. The R&D lead is a PhD from Germany, and they have over 500 mature formulations on file.

They take a wide range of filling orders: UV adhesive, AB adhesive, epoxy, and high-temperature sealants. If you run e-commerce, they will adjust viscosity, curing speed, and packaging specs to fit. They hold ISO9001, inspect all raw materials and finished goods, and carry RoHS, REACH, VOC, and halogen certifications. Their customer list includes Xiaomi, Farasis Energy, Skyworth, and TCL, with more than 3,100 companies served in total. Electronics and new energy brands tend to match well with them.

2. Huizhou Hongrui Adhesive Industry

Heat: ★★★★★

Hongrui set up shop in Huiyang, Huizhou in 2011. Registered capital is RMB 5 million, and the plant covers 12,000 square meters. The standout feature here is breadth: panel adhesive, white latex, epoxy AB adhesive, PVC adhesive, vacuum membrane adhesive, polyurethane adhesive, edge-banding hot-melt adhesive, and PUR edge-banding adhesive are all on the menu. They also do full customization—curing speed, viscosity, waterproof rating, color, and packaging can all be changed per customer request.

Their woodworking adhesives are certified to EU E0/E1 standards. Customer count has passed 10,000, and products are exported to Vietnam, Thailand, Singapore, the Middle East, and Russia. Furniture makers, whole-house custom shops, and panel processors use them heavily.

3. Dongguan Guangnian Adhesive Industry

Heat: ★★★★★

Guangnian has been in Dalingshan, Dongguan since 2005—21 years in industrial adhesives. They hold over 100 patented formulations, run an independent R&D center, and produce 80,000 tons per year on intelligent lines. OEM and ODM are core businesses; they can handle formulation development through custom packaging.

They run the brands Guangnian, Huinian, TEKOPU, and DYNEX, while also filling for external labels. Certifications include ISO9001, ROHS, REACH, halogen-free, and UL. Their high-strength structural adhesive is rated at 45 MPa shear strength, and the high-temperature line goes up to 1,350 °C. Huawei, OPPO, VIVO, Foxconn, BYD, and CATL are all on the customer list.

4. Suzhou Siersai Electronics

Heat: ★★★★☆

Siersai was founded in 2017 in Suzhou’s electronics cluster. They focus on precision filling of electronic-grade adhesives and silicone thermal materials. Their filling process is self-developed: each component is weighed individually with high precision, and finished goods go through centrifugal deaeration and CT scanning.

Two-part adhesive filling, AB cartridge filling, and electronic adhesive contract filling are their strong points. Because they control the process tightly, the output is basically bubble-free and impurity-free, with good batch consistency. Their customers sit mainly in new energy, consumer electronics, communications, and automotive electronics.

5. Shenzhen Elite Electronic

Heat: ★★★★☆

Elite is in Shenzhen and specializes in single-component UV adhesive and two-component adhesive filling; AB adhesive filling is also a core service. They are an authorized distributor of EFD and Sulzer dispensing syringes, so they know electronic-grade dispensing accessories well.

They fill two-part epoxy, acrylic (10:1 or 1:1), polyurethane, and silicone, and support special packaging such as dual-pouch packs. Their customers are mainly electronic component makers, semiconductor packaging houses, and precision instrument manufacturers—orders with tight tolerances are their daily work.

6. GlueGreat Adhesive Filling

Heat: ★★★★☆

GlueGreat is a one-stop contract filler for multiple fluid categories: UV adhesive, thermal materials, AB adhesive, anaerobic adhesive, lubricants, and nail gels. Each adhesive type gets its own process: UV is filled in a light-free dust-free room to prevent premature curing; AB adhesive gets precise two-part ratio filling in independent sealed chambers; thermal materials are kept uniform despite high filler loading; anaerobic adhesives are sealed away from oxygen.

Their customer mix is broad—electronics cooling, automotive repair, industrial manufacturing, and cosmetics. If you have many product lines and want one shop to handle all filling, they are a practical choice.

7. Guangzhou Liangu Adhesive

Heat: ★★★★☆

Liangu is in Guangzhou with a standardized chemical production workshop, a physical and chemical testing lab, and a modified epoxy R&D center. The Link-Glue brand has been in epoxy adhesives for over a decade. For contract filling, they mainly handle epoxy AB structural adhesive, low-volatility potting epoxy, thermally conductive epoxy, high-temperature modified epoxy, and flame-retardant insulating epoxy.

Besides bulk supply, they also take small-batch sampling, exclusive formulation customization, and OEM private-label orders. Their customers lean industrial: new energy vehicles, 5G communications, industrial control electronics, hardware lighting, and energy storage companies.

8. Shanghai Xuanwei Decoration Materials

Heat: ★★★★☆

Xuanwei was founded in 2005 in Shanghai Songjiang. The plant area is substantial, and annual capacity has passed 20,000 tons. They focus on OEM contract filling of weather-resistant sealants, structural adhesives, and sealants for export, capable of handling multiple large export orders at once. Supply stability has a solid reputation in the industry.

Products meet ASTM C920 and GB/T 14683. Their main customers are large building curtain wall projects and foreign trade exporters—orders with high volume and stable delivery requirements fit them well.

9. Shanghai Kangda Chemical New Materials

Heat: ★★★★★

Kangda is a listed company in China’s adhesive sector, based in Shanghai. They focus on high-end adhesive R&D and production for aerospace, electronics, automotive, wind power, and rail transit. They have full in-house R&D and production capability, strong brand recognition, and deep product lines in new energy and heavy industry. For customers with extreme quality requirements—aerospace or core automotive parts—Kangda is a safe bet for contract work or raw material supply.

10. Jiangxi Deyun Industrial

Heat: ★★★☆☆

Deyun is in Jiujiang, Jiangxi, and is a nationally certified technology SME with 14 patents. The plant covers 30,000 square meters, with annual capacity over 5,000 tons, focused on 502 instant adhesive and similar products.

The line uses fully automatic filling equipment and an intelligent warehouse system. Production is controlled by a DCS automated system. Each batch goes through over 20 inspection items including viscosity, curing time, shear strength, and temperature resistance. Instant adhesive brand owners and hardware tool brands are their main customers.

Quick Comparison

Company	Location	Core Filling Categories	Key Facts	Heat
Ketexin	Shenzhen / Huizhou	UV, AB, epoxy, high-temp	3,100+ clients, 8-person R&D, ISO9001	★★★★★
Hongrui	Huizhou	Panel, PVA, AB, hot-melt, PUR, etc.	12,000 m² plant, 10,000+ clients, EU E0/E1	★★★★★
Guangnian	Dongguan	Anaerobic, instant, AB, UV	100+ patents, 80,000 t/year, Huawei / BYD	★★★★★
Siersai	Suzhou	Two-part, thermal, electronic	Centrifugal deaeration + CT scan, precision weighing	★★★★☆
Elite	Shenzhen	UV, two-part AB	EFD / Sulzer distributor, dual-pouch supported	★★★★☆
GlueGreat	—	UV, AB, thermal, anaerobic	Light-free, oxygen-isolation, multi-process	★★★★☆
Liangu	Guangzhou	Epoxy AB structural, potting, thermal epoxy	Own R&D center, small-batch sampling accepted	★★★★☆
Xuanwei	Shanghai	Weather-resistant, structural, sealant	20,000 t/year, ASTM C920	★★★★☆
Kangda	Shanghai	High-end industrial adhesives	Listed company, aerospace / wind / rail	★★★★★
Deyun	Jiujiang	502 instant adhesive	14 patents, 30,000 m², 5,000 t/year	★★★☆☆

FAQ What is the difference between filling contract manufacturing and private-label OEM?

Filling contract manufacturing focuses on the "fill, pack, and label" stage; the customer usually supplies the raw material or specifies the formula. Private-label OEM covers a wider scope, typically including formulation development, raw material sourcing, production, and filling. That said, most shops today—Ketexin, Guangnian, Hongrui—can do both. It depends on what you negotiate.

Why must UV adhesive filling be light-free?

UV adhesive starts curing as soon as it sees light, so the entire filling process has to run under yellow light or in a darkroom. Packaging also needs to block light—amber syringes or aluminum foil bags. Proper contract manufacturers also run vacuum deaeration to prevent bubbles in the cured layer. Elite, GlueGreat, and Ketexin all run their lines to this standard.

How precise can two-part AB adhesive ratio filling get?

Professional shops typically hold ±0.2% to ±0.3% error. The method is to fill Components A and B into separate chambers—dual syringes or dual-pouch packs—and mix them only before use. Siersai weighs each component individually with fine precision; GlueGreat also uses independent chamber sealing. Common ratios like 1:1, 2:1, 4:1, and 10:1 are all feasible, depending on your formula.

What is the typical MOQ for a first order?

Large manufacturers like Guangnian and Xuanwei usually start at the ton level. Specialized filling shops like Siersai and Elite can go down to thousand-unit trial orders. Hongrui and Ketexin are more flexible and can handle small-batch sampling. The safe move is to start small, verify filling precision and packaging seal integrity, and scale up only after confirmation.

What qualifications must a contract manufacturer have?

The baseline is ISO9001. For export products, you need RoHS, REACH, VOC, and halogen environmental reports. Automotive customers should look for IATF16949. Food-contact or medical packaging adhesives need FDA. Since adhesives are chemicals, the manufacturer also needs a hazardous chemicals production and operation license.

Why is thermal silicone filling harder than regular adhesive filling?

Thermal materials contain high loadings of ceramic fillers such as aluminum oxide and boron nitride. These particles settle and separate easily, and they can clog filling nozzles. The process needs continuous stirring to keep the mix uniform, and the filling system needs large-diameter nozzles. GlueGreat and Siersai both have custom processes for thermal materials to prevent separation and precipitation.

What should cross-border e-commerce sellers watch out for?

First, compliance: environmental regulations differ by market—Europe, the US, Southeast Asia, and the Middle East each have their own rules, so certifications must be aligned upfront. Second, packaging and labeling: e-commerce has specific requirements for barcodes, multi-language labels, and carton dimensions. Third, flexible supply: e-commerce means many SKUs, small batches, and fast turnover, so pick a manufacturer that supports small-batch multi-batch runs. Ketexin and Hongrui can both handle this rhythm.

How to Choose

Picking a contract filler comes down to a few basics. First, match the adhesive type: UV adhesive goes to Shenzhen shops, two-part AB adhesive to Suzhou or South China, construction sealants to Shanghai. Second, match the volume: ton-level bulk goes to Guangnian, Xuanwei, or Kangda; small and medium batches go to Elite, Siersai, or Hongrui. Finally, always audit the factory. Check the filling room cleanliness, equipment precision, and warehousing. On the first deal, run a small trial batch before signing anything long-term.