Top 10 Silicone Sealant Manufacturers in China
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China is renowned for its vast industrial system, and in the field of silicone sealant production, it boasts some of the world's leading manufacturers. These companies are known for their unwavering commitment to quality, innovation, and customer service.
However, with the ever-growing number of Chinese manufacturers, identifying the industry leaders can be quite challenging.
In this blog post, we'll introduce the top ten silicone sealant manufacturers in China. We conducted extensive research, taking into account factors such as company reputation, product quality, innovation capabilities, and customer reviews, to compile this top 10 list. Let's take a look!
Market Insights and Latest Trends of Silicone Sealant in 2025:
Looking at the global market size of silicone sealants reveals impressive growth and potential. In 2021, the market was valued at $3.78 billion. Looking ahead to 2033, it is projected to surge to approximately $7.62 billion. More notably, the compound annual growth rate (CAGR) is expected to remain stable at 6.2% between 2022 and 2030 (source data).
Demand for silicone sealants is primarily driven by the construction industry, which holds the largest global market share. However, other industries such as automotive, aerospace, and consumer electronics also contribute to the market's growth.
Key Market Insights:
1. Construction Industry: The construction sector remains a primary consumer of silicone sealants, utilizing them for their superior adhesion and flexibility in applications such as joint sealing and waterproofing. The ongoing global infrastructure development and renovation projects are fueling this demand.
2. Automotive Sector: In the automotive industry, MS polymer adhesives are favored for their durability and ability to bond dissimilar materials, contributing to vehicle weight reduction and improved performance. The market for silicone adhesives is expected to grow from $5.13 billion in 2024 to $5.51 billion in 2025, at a CAGR of 7.3%.
3. Environmental Considerations: The shift towards eco-friendly and sustainable products has led to increased adoption of silicone sealants, which are solvent-free and exhibit low VOC emissions, aligning with stringent environmental regulations.
Top 10 Silicone Sealant Manufacturers in China
1.Kastar adhesive Co.,Ltd
Founded in 1997, Kastar is the largest professional OEM & ODM manufacturer of adhesive sealants in China, with 50,000 square meters of factories. Having professional manufacturing equipment and facilities, and with 27 years of experience specializing in construction adhesive sealants and a strict quality control system, we created the top-class KASTAR®.
Business Overview
Kastar has three factories in Foshan and Longkou, covering an area of 50,000 square meters, with over 200 employees. It is one of the top five silicone sealant manufacturers in China. In addition, Kastar is equipped with a 1,500-square-meter national-level laboratory, 18 national-level engineers, 16 national patents, and over 100 testing devices. We are committed to providing the highest quality silicone sealants on the market.
Advantages
- Strong technical expertise and long industry history.
- Widely used in landmark building curtain walls in China.
- Comprehensive testing and quality systems geared to construction codes.
Disadvantages
- Product portfolio is heavily tilted toward construction, with relatively less visibility in consumer DIY channels.
- Lead times can be longer for small export orders due to focus on large projects.
Main products
Hybrid MS polyester polymer sealants; Silicone Sealants; Firestop Sealants; Acrlyic latex caulk sealants; PU sealant; Epoxy tile grout; Swimming pool grout etc,
2. Junbom Group
Starting 30 years ago, Junbom Group now covers over one million square meters of space for its work, including a huge 140,000 square meter area just for making products. They've set up seven big factories in different parts of China, showing how big their operation is in the industry.
Business Overview
Every year, they make products worth 3 billion RMB, thanks to their large team of more than 2000 workers and the help of more than 50 high-tech machines that produce silicone sealant.
Advantages
Extensive Reach: With strategically located factories across key regions, Junbom ensures unparalleled accessibility and efficiency in supply chain management.
Innovative Product Range: Junbom's dedication to research and development has created a diverse and innovative product lineup that meets various industrial needs.
Disadvantages
Resource Intensive: The massive scale of operations and emphasis on maintaining a widespread production network could create challenges in adaptability in rapidly changing market conditions.
Main products
Structural silicone sealants; Weatherproof and neutral-cure silicone sealants; Acetoxy silicone sealants; Fire-resistant silicone and hybrid adhesives.
3.Huitian Adhesive (Shanghai) Co., Ltd.
Huitian's adhesive business traces back to the 1970s–1980s in China and later built large facilities serving construction, electronics, and automotive industries. Within its portfolio, silicone and other sealants are used in buildings, solar energy, transportation, and industrial assembly.
Business overview
Huitian develops and manufactures a wide spectrum of adhesives and sealants, including silicone, polyurethane, and hot melt products. It positions itself as a full-solution partner for industrial customers requiring bonding and sealing technologies.
Advantages
- Diversified application coverage across many industries.
- Strong R&D capacity and large-scale production.
- Ability to combine silicone sealants with other adhesive systems in one project.
Disadvantages
- For buyers seeking only silicone sealants, the broad focus may feel less specialized.
- Minimum order quantities can be relatively high for some export items.
Main products
Construction silicone sealants.
Industrial sealants and adhesives for electronics and solar modules.
Automotive and transportation bonding products.
4. Shandong Juhuan New Material Technology Co., Ltd.
Shandong Juhuan New Material Technology Co., Ltd. is another big player in the world of silicone sealant manufacturing, distinguished by its vast experience and technological prowess. Established in 2013, Juhuan has made itself a reputable name in the industry, with its products covering construction sealants and industrial sealants.
Business Overview
Located just a stone's throw away from key transportation hubs like Linyi Railway Station and Linyi Airport, Shandong Juhuan boasts a massive factory over 100 acres. The company's infrastructure includes workshops with a combined construction area of approximately 42,000 square meters.
With a total investment of 300 million yuan and a dedicated workforce of over 700 employees, Juhuan exemplifies a commitment to quality and innovation in silicone sealant production.
Advantages
- Strategic Location: Its proximity to major transport facilities ensures streamlined logistics and distribution.
- Robust Infrastructure: The expansive factory and investment underscore Juhuan’s capacity for large-scale production and commitment to meeting the diverse needs of its clients.
Disadvantages
Youthful Tenure: Although Juhuan enjoys a solid reputation in the industry, its relatively young age may create doubts for some clients who value experience.
Main products
Structural silicone sealants.
Weatherproof and neutral-cure silicone sealants.
Acetoxy silicone sealants for sanitary use.
5. Honghua Industrial Co., Ltd.
Honghua is cited as one of the larger Chinese producers of silicone-related materials and silicone sealants, supplying both domestic and overseas markets. Its portfolio spans sealants, adhesives, and various silicone materials used in construction, automotive, and consumer goods.
Business overview
The company focuses on the development and mass production of silicone sealants and related chemical materials, providing solutions for building joints, glass bonding, and industrial sealing needs. It often works with OEM and private-label partners as well.
Advantages
- Large-scale facilities and high output capacity.
- Competitive pricing in mid-range performance segments.
- Experience in OEM production for different brands.
Disadvantages
- Brand recognition outside China may be weaker than long-established export brands.
- High dependence on bulk orders; service for very small customers can be limited.
Main products
Neutral and acetoxy silicone construction sealants.
Specialized sealants for automotive and consumer goods uses.
Auxiliary silicone materials and modifiers.
6. Chengdu Guibao Science and Technology Co., Ltd.
Chengdu Guibao Science and Technology Co., Ltd. was established in 1998. Today, it is a hub for the country’s silicone industry. The company's portfolio also extends to designing industrial models for silicone sealant manufacturing, showcasing its technical expertise and innovation leadership.
Business Overview
Guibao makes many silicone products that are popular in our country and even in other places around the world, like the Middle East and Southeast Asia. Guibao always works on improving its technology and maintaining top-notch quality, making it a leader and ahead of other companies making similar stuff.
Advantages
- Technological Innovation: Guibao's investment in research and development ensures the continual improvement of its products and processes.
- Leadership in the Silicone Sealant Industry: Leading the industry since its inception, Guibao has set benchmarks for quality and innovation.
Disadvantages
Narrow Product Focus: Guibao's specialization in silicone sealants may limit the scope of its offerings for clients with more diverse needs.
Main products:
Construction silicone sealants.
Neutral cure and weatherproof sealant systems.
Industrial sealants for machinery and assemblies.
7. Kaifeng Hitakol Building Material Co. Ltd.
Hitakol specializes in high-performance construction adhesives and silicone sealants with a broad application range including commercial and residential buildings, public infrastructure, interior decoration, and so on.
Business Overview
Hitakol prioritize customer satisfaction by developing products tailored to specific needs, guaranteeing optimal performance and application. Their commitment to quality and innovation has made them a reliable name in construction materials.
Advantages
- Wide Industry Application: Hitakol's adhesives and sealants are versatile and are used in many industries, demonstrating the company's ability to meet diverse needs.
- Customer-Centric Development: Products are developed with direct input from customer feedback, ensuring they meet the market's actual needs.
Disadvantages
New in the Market: Compared to others, this one is pretty new in the market so you might have trust issues.
Main products
Construction silicone sealants for doors, windows, and facades. General-purpose silicone sealants for household and industrial use.
8. Shanghai Siway Curtain Material Co., Ltd.
Shanghai Siway was established in 1984 and is often highlighted as a leading silicone sealant manufacturer with strong export activity and multi-line production facilities. Over time, Siway has expanded from domestic construction uses to global supply for structural glazing, weatherproofing, and specialty sealants.
Business overview
Siway focuses on adhesives and sealants for building facades, curtain walls, bathroom and sanitary applications, and industrial sealing. It operates multiple production lines, an R&D center, and distributes products to dozens of countries.
Advantages
- Proximity to major seaports, beneficial for export shipping.
- Emphasis on efficiency and customer-focused service.
- Team with specialized knowledge of silicone sealant production.
Disadvantages
- Smaller global brand footprint compared with long-established national brands.
- Product range may be narrower than group-level chemical conglomerates.
Main products
Construction silicone sealants for doors, windows, and facades.
General-purpose silicone sealants for household and industrial use.
Customized packaging and formulations for overseas partners.
9. Guno Tianjin Industrial C., Ltd.
Guno also known as GNS Group, has been a leader in the silicone sealant industry since its establishment in 2003.
Based in Chagugang Town, this group of companies has consistently dedicated itself to the R&D and marketing of top-tier sealing and bonding solutions, both nationally and internationally.
Business Overview
With a commitment of over 18 years, GNS Group has strengthened its reputation by focusing on technical research. The company’s proactive approach to adopting cutting-edge production equipment and management philosophies from around the globe has ensured the high quality of its products.
Today, GNS boasts a commanding presence in the domestic market, holding more than 50% market share, and its products are available in 78 countries and regions worldwide.
Advantages
- Global Reach: Having products sold in 78 countries and regions highlights GNS’s global appeal and the universal trust in its solutions.
- Dominant Market Share: GNS's significant hold on the domestic market showcases its effectiveness and popularity among consumers.
Disadvantages
High Competition in Global Markets: Expanding into numerous international markets pits GNS against several competitors, requiring continuous innovation to sustain.
Main Products
Structural silicone sealants for glass curtain walls.
Weatherproof silicone sealants for facades and joints.
Insulating glass silicone sealants.
10. Guangzhou Jointas Chemical Co., Ltd.
Guangzhou Jointas is known as a producer of silicone sealants and adhesives with a focus on environmentally conscious, low-VOC products for buildings and industry. It has grown along with Southern China’s construction boom, supplying sealants for facades, doors, and windows.
Business overview
Jointas emphasizes R&D on energy-saving and eco-oriented sealants for modern building envelopes. The company offers weatherproof, structural, and special-purpose sealants designed to work with curtain walls, stone facades, and metal roofing.
Advantages
- Emphasis on environmental performance and low emissions.
- Specialized formulations for high-humidity and coastal climates.
- Ability to support large engineering projects in South China.
Disadvantages
- Product portfolio concentrates strongly on construction; fewer DIY and retail-grade offerings.
- Brand familiarity may be limited in some overseas markets compared with global multinationals.
Main products
Structural glazing silicone.
Weatherproof silicone sealants for curtain walls and façades.
Silicone sealants compatible with stone and metal panels.
How to Choose a Silicone Sealant Manufacturer?
Here are some of the important factors to consider when choosing a silicone sealant manufacturer:
1. Quality of Products
You can never compromise on the quality of the silicone sealant. High-quality sealants offer better durability, adhesion, and resistance to temperature changes.
Look for manufacturers who conduct rigorous testing on their products to ensure they meet global quality standards. Certifications from recognized industry bodies are a good indicator of high-quality materials.
2. Innovation and Technology
Manufacturers that invest in research and development (R&D) are often at the forefront of the industry. They can produce innovative products that provide solutions to new market needs.
These companies are likely to offer products with advanced features, such as improved flexibility, reduced curing time, or enhanced chemical resistance and UV light resistance.
3. Customer Service and Support
Excellent customer service is crucial. This includes pre-sale consultation, order support, and after-sales service.
A good manufacturer will help you choose the right product for your needs and provide technical support for application and troubleshooting. Positive reviews and testimonials from customers can be a good indicator of a company’s commitment to service.
4. Environmental Sustainability
Sustainability is also important in all sectors, including silicone sealant manufacturing. Look for companies that implement sustainable practices in their production processes.
This can include using environmentally friendly materials, minimizing waste, and reducing energy consumption. Manufacturers that prioritize sustainability are likely to be more responsible and forward-thinking.
5. Pricing and Value
While the cost is an important factor, you have to consider the value you're getting for your money. The cheapest option is not always the best in the long run if it compromises quality or longevity.
Evaluate the price relative to the product's performance, durability, and the manufacturer's service. A good balance between cost and quality ensures you’re making a sound investment.
