SUN MAGNETIC SYS-TECH CO., LTD.

Introduction

Sun Magnetic Sys-Tech Co., Ltd. (Chinese: 北京赛尼格磁电科技有限公司) is a Beijing-based manufacturer and engineering supplier specializing in permanent-magnetic assemblies, magnetic separators, and related magnetic systems. The company serves industrial processors that require the removal of ferrous contaminants from powders, granules, liquids, and slurries, including plastics, food, pharmaceuticals, feed, chemicals, recycling, and lithium-battery production.

Founded in 2001, Sun Magnetic combines product design, magnetic-material application, equipment manufacture, and customized engineering. Its plastics-industry relevance lies principally in contamination control: magnetic separators can be installed in polymer compounding, masterbatch, plastics recycling, extrusion, injection-molding, and material-handling lines to capture ferrous particles before they damage equipment or compromise finished products. The company is also listed as a plastics and rubber supplier by Chinaplas, where it is identified as a “Shining Niche” company.

History and Development

Sun Magnetic was established in Beijing in 2001 by Sun Jianguo, initially developing permanent-magnetic systems and assemblies for industrial applications. Its subsequent development can be summarized through several milestones:

2001: Establishment of the company and commencement of activities in permanent-magnetic system design and manufacture.
2000s–2010s: Expansion from individual magnetic components into complete magnetic-separation equipment and customized assemblies for processing industries.
2010s: Development of applications for grain processing, food ingredients, chemicals, plastics, recycling, and other sectors requiring continuous removal of metallic contaminants.
Later development: Establishment of manufacturing activities in the Yongqing Gas Industrialized Garden in Langfang, Hebei, while maintaining a Beijing office and commercial base.

The company’s development reflects a wider shift in industrial plastics processing from basic metal detection toward integrated contamination-prevention systems positioned at raw-material intake, conveying, feeding, and processing stages.

Business Operations and Segments

Sun Magnetic operates primarily as a specialist manufacturer and engineering supplier rather than as a polymer producer or plastics processor. Its activities encompass:

Design and manufacture of permanent magnetic assemblies.
Production of magnetic separators for dry and liquid materials.
Application engineering and equipment customization.
Original-equipment manufacturing and original-design manufacturing.
Export sales and technical support for international customers.

Its business model is based on adapting magnetic equipment to material characteristics, throughput requirements, line configuration, cleaning procedures, and contamination risks. This approach is significant in plastics plants, where separators may need to accommodate free-flowing pellets, regrind, powders, additives, masterbatch, or viscous process streams.

Products and Technologies

Magnetic separators

The company’s principal industrial products are magnetic separators designed to remove ferrous particles from dry solids, liquids, and slurries. Product configurations can include:

Magnetic filter bars and grids.
Drawer-type and grate-style separators.
Pipeline and liquid-line magnetic separators.
Magnetic assemblies integrated into hoppers, chutes, or conveying systems.
Customized separators for existing production equipment.

In plastics processing, the operating principle is generally passive magnetic capture. Permanent magnets generate a magnetic field that attracts ferromagnetic particles as material passes over or around magnetic surfaces. The design must balance magnetic-field strength, product flow, pressure drop, accessibility for cleaning, and protection against particle re-entrainment.

Permanent-magnetic assemblies

Sun Magnetic also supplies general and application-specific magnetic assemblies. These may be configured for:

Material separation.
Fixing and retention.
Industrial handling systems.
Equipment integration.
Customized mechanical or magnetic functions.

The company’s product range extends beyond plastics-related equipment to magnetic couplings, construction-related assemblies, hardware tools, educational products, apparatus, meters, and control-related components.

Engineering characteristics

For plastics and rubber applications, relevant technical considerations include:

Particle capture: The ability to collect ferrous fragments, wear particles, and metallic contamination from polymer feedstocks.
Material compatibility: Selection of stainless-steel contact surfaces and suitable construction for powders, pellets, liquids, or corrosive chemicals.
Flow performance: Configuration of magnetic bars, grids, or pipeline units to minimize disruption to material movement.
Cleaning access: Removable or serviceable magnetic elements can reduce downtime during inspection and cleaning.
System integration: Equipment may be designed for new production lines or retrofitted into existing hoppers, chutes, conveyors, and process pipes.

Magnetic separators do not replace nonmagnetic metal detectors, eddy-current systems, sieving, or other quality-control technologies. Instead, they address a specific portion of the contamination spectrum, particularly ferrous particles that respond effectively to permanent magnetic fields.

Applications and End Markets

Sun Magnetic identifies plastics as one of several industrial sectors served by its magnetic-separation products. Within the plastics ecosystem, likely applications include:

Compounding and masterbatch production.
Recycling and reprocessing of plastic waste.
Pellet conveying and storage.
Powder handling for additives and fillers.
Extrusion and injection-molding material supply.
Chemical production associated with polymers and plastics.
Lithium-battery material processing, where contamination control is especially important.

The company also supplies equipment for food, pharmaceutical, feed, grain, coffee, spices, flour, palm oil, tomato products, and other processing industries. This cross-sector customer base is relevant because magnetic-separation requirements are shared by many bulk-material operations: raw materials must be protected from metallic fragments introduced during mining, transport, packaging, equipment wear, or maintenance.

Global Presence and Market Position

Sun Magnetic maintains its principal office in Xicheng District, Beijing, and identifies its manufacturing location in Langfang, Hebei. Its products are exported to Southeast Asia, Europe, North and South America, and Australia, giving the company an international market orientation.

The company’s market position is that of a specialized magnetic-equipment supplier serving industrial processors and equipment integrators. It competes through product customization, permanent-magnetic technology, export capability, and application-specific engineering rather than through large-scale polymer production or ownership of plastics brands.

Its international presence also places it within a supply chain shaped by several industry requirements:

Increasing quality-control expectations for recycled and virgin polymer feedstocks.
Greater use of automated conveying and feeding systems.
Demand for retrofit equipment in older factories.
Pressure to reduce contamination-related scrap, downtime, and equipment damage.
Expansion of plastics recycling and circular-material processing.

Research and Development

Sun Magnetic’s technical activities center on the application of permanent magnets and the design of magnetic assemblies for different material-handling conditions. The company describes itself as having more than two decades of experience in research, development, design, and manufacture of permanent magnetic systems.

Research and engineering priorities in this field commonly include:

Improving magnetic-field distribution and effective capture zones.
Adapting equipment to fine powders, pellets, liquids, and slurries.
Developing compact equipment for constrained process lines.
Improving cleanability and maintenance access.
Designing nonstandard equipment for upgrades and replacements.
Matching separator geometry to throughput and contamination characteristics.

For plastics manufacturers, such development work is valuable because feedstock conditions vary considerably. A separator for dry polymer pellets requires a different configuration from one handling carbon-black powder, mineral-filled compounds, recycled flakes, or liquid chemical intermediates.

Sustainability and Environmental Initiatives

Magnetic separation can support resource efficiency by reducing the risk that metallic contamination causes product rejection, equipment damage, or premature disposal of polymer batches. In recycling operations, contamination control is particularly relevant because post-consumer and post-industrial materials may contain metal fragments introduced during collection, shredding, baling, or processing.

The environmental contribution of magnetic separation is therefore indirect and operational rather than a substitute for broader plastics sustainability measures. Its effectiveness depends on the overall process, including sorting, washing, shredding, filtration, metal detection, quality testing, and responsible management of captured contaminants.

The company’s products are also connected to wider plastics-industry efforts to increase recycled-content use and stabilize the quality of secondary materials. However, magnetic separators address mainly ferrous contamination and must be combined with other technologies to remove nonferrous metals, incompatible polymers, dirt, moisture, and chemical residues.

Quality Management and Certifications

Sun Magnetic states that it operates under ISO 9001 quality-management certification. The company’s product and application work also involves manufacturing controls, dimensional inspection, magnetic-performance verification, surface-finish requirements, and testing of assemblies before delivery.

The company has been identified in Chinese industry listings as a high-technology enterprise and as a specialized “Shining Niche” enterprise, a designation associated with government-recognized specialization and operational capability. Such designations place the business within China’s policy framework supporting specialized industrial manufacturers and technology-oriented small and medium-sized enterprises.

Economic and Industrial Significance

Sun Magnetic occupies a specialized position at the interface of equipment manufacturing, bulk-material handling, and process quality control. Its products contribute to industrial reliability in sectors where small quantities of ferrous contamination can cause:

Damage to extruders, pumps, mixers, and other processing equipment.
Surface defects or inclusions in finished polymer products.
Production interruptions and maintenance costs.
Rejection of food, pharmaceutical, chemical, or plastics batches.
Reduced value of recycled materials.

A supplier of this kind does not normally determine polymer prices or resin-market capacity. Its economic importance instead arises from enabling more reliable operation of production lines and from supplying equipment that can be integrated into both new installations and existing factories.

Innovations and Future Outlook

Future demand for Sun Magnetic’s products is likely to be influenced by several developments in the plastics industry:

Growth in mechanical recycling and the need to control contamination in recycled feedstocks.
Increasing use of automated material handling and continuous processing.
Higher quality requirements for food-contact, medical, electronic, and battery-related plastics.
Expansion of regional manufacturing and demand for locally serviceable process equipment.
Greater emphasis on reducing scrap, downtime, and avoidable energy consumption.

Potential technical development areas include higher-performance magnetic assemblies, more compact separators, easier-cleaning designs, improved monitoring of separator condition, and closer integration with automated conveying and quality-control systems. The company’s future competitiveness will depend on maintaining reliable magnetic performance while adapting equipment to increasingly diverse polymer materials and more demanding contamination-control specifications.

Summary

Sun Magnetic Sys-Tech Co., Ltd., or 北京赛尼格磁电科技有限公司, is a Beijing-based specialist in permanent-magnetic systems and magnetic separators. Founded in 2001, it supplies equipment for removing ferrous contaminants from dry and liquid materials and serves plastics, recycling, food, pharmaceutical, chemical, feed, grain, and lithium-battery applications.

Within the plastics industry, its role is concentrated in process protection and quality assurance rather than resin production or plastics conversion. Its magnetic assemblies and separators can support compounding, polymer handling, recycling, and related manufacturing operations by reducing ferrous contamination, protecting equipment, and improving material reliability. With ISO 9001 certification, a manufacturing base in Hebei, and exports to multiple regions, the company represents a specialized equipment supplier operating within the broader global plastics-processing and industrial-separation ecosystem.

References

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CPS+ eMarketplace. (n.d.). SUN MAGNETIC SYS-TECH CO., LTD.SUN MAGNETIC SYS-TECH CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1040027Link