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our fumed silica has a specific surface area of 150-380 m2/g offering excellent thickening and thixotropic properties for silicone rubber coatings and adhesives
precipitated silica with sio2 99.8% min high purity and low iron content enhances rubber products tensile strength and wear resistance
fda and eu food contact compliant silica is safe as anti caking agent in food additives and thickener in cosmetic formulations
hydrophobic fumed silica features superior water repellency and dispersion stability preventing agglomeration in high solid coatings and inks
hydrophilic and hydrophobic silica grades with customized particle size meet rubber reinforcement plastic modification and battery separator needs
20000 tons annual production capacity and automated lines ensure consistent quality and on time delivery for global bulk orders
Reinforcing Fumed Silica - High Specific Surface Area for Rubber Product Reinforcement and Tire Tread Modification Use
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About Us
Hebei Hezhen Industrial Co., Ltd. specializes in high-purity silica production, serving rubber and toothpaste industries. With advanced manufacturing facilities, the company ensures excellent dispersion and non-toxic properties. Certified for quality and safety, it offers dual-purpose silica with 300-2000mesh specifications, supporting diverse applications.Boasting strong technical and economic strength, we leverage local geographical and resource advantages, adopt advanced modern production technology, and establish a high-level multi-layer management system to strictly control product quality, ensure on-time delivery and provide comprehensive related services. Founded in June 2015 (with the factory established in 2008), the company is located in Shikan Village, Shijiazhuang, Hebei Province. Covering an area of over 20,000 square meters, it is approximately 300 km from Tianjin Port, enjoying convenient transportation. We have a team of over 50 employees, most of whom hold college degrees or above, including professional engineers. Offering one-stop services covering mineral processing, testing, sales, finance, warehousing and after-sales support, we are ISO9001:2000 internationally certified. Our main products include silica series, diatomite powder, kaolin clay, talc powder, iron oxide pigment series, colored sand, rock flake, mica series, vermiculite, tourmaline series, fiber materials and fireproof coating. Adhering to the principle of "Top Quality, Top Service", our products have been exported to North America, Western Europe, the Middle East, Australia, Southeast Asia, South America, Africa and other regions worldwide. As a professional mineral products supplier, we have professional teams specializing in product R&D & design, quality control & inspection and company operation. If you have any new ideas or suggestions about our products, please feel free to contact us. We look forward to cooperating with you and delivering satisfactory products and services.
FAQs
What is silicon dioxide and what are its main uses?
Silicon dioxide is a white, amorphous powder based on silica, featuring high specific surface area, excellent reinforcing properties and chemical stability. It is widely used in rubber (as a reinforcing agent for tire and rubber products), plastics (to improve mechanical properties), coatings (to enhance scratch resistance), toothpaste (as an abrasive), and cosmetics industries.
Which regions are the main exporters of silicon dioxide ?
The main exporting regions include China (with large production capacity and abundant raw material reserves), the United States, Germany, and Japan. These areas dominate global supply due to mature production technologies and consistent product quality.
What quality standards should I pay attention to when importing silicon dioxide?
Key parameters include: specific surface area (150-300 m²/g for reinforcing grades), particle size distribution (D50<20 nm for premium products), moisture content (<1.5%), pH value (5-7), and impurity content (low heavy metal levels). Certifications like ISO 9001.
How is silicon dioxide packaged for international transportation?
It is usually packaged in 25kg paper bags with inner plastic liners; for large orders, 500kg/1000kg bulk bags or bulk shipping are available. It is critical to mark product specifications, batch numbers, and safety labels (e.g., "non-hazardous goods") on the packages.
What are the common trade terms in silicon dioxide trade?
Common terms include FOB (Free On Board), CIF (Cost, Insurance and Freight), and EXW (Ex Works). The selection depends on negotiations between buyers and sellers regarding transportation responsibilities and costs.
What documents are required for importing silicon dioxide?
Required documents include commercial invoice, packing list, bill of lading (B/L), certificate of origin, and quality inspection report.
What payment terms do silicon dioxide suppliers commonly accept?
Suppliers usually accept letters of credit (LC), telegraphic transfer (TT), or secure payment platforms (e.g., Alibaba Trade Assurance). The standard practice is to prepay 30% as a deposit, and the balance is paid before shipment.
Can silicon dioxide be customized for specific industrial uses?
Yes, suppliers offer tailored grades based on client needs, such as:
Reinforcing silicon dioxide (for high-strength rubber products like tires).
Hydrophobic silicon dioxide (for improved dispersion in oil-based coatings).
Ultra-fine silicon dioxide (for matte effects in cosmetics).
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