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{"title":"ED Type Mnzn Ferrite Transformer Core ED25 ED38 ED40 ED42 ED43","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/2f\/bd\/aa123297eb183eb9ce33b4e4e13e-200x200-1\/ed_type_mnzn_ferrite_transformer_core_ed25_ed38_ed40_ed42_ed43.jpg","attrs":{"Place of Origin":"Zhejiang, China","Brand Name":"careful","Model Number":"ed","Certification":"ISO9001:2015"}}
{"title":"Soft Ferrite Core Choke Coil Rod Inductor With Tube 4*17 16uh","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/8a\/a0\/44c11bd0283b505f5c3f256773e5-200x200-1\/soft_ferrite_core_choke_coil_rod_inductor_with_tube_4_2a17_16uh.jpg","attrs":{"Model Number":"Inductor Coil","Place of Origin":"Zhejiang, China","Brand Name":"careful","Certification":"ISO9001;rohs"}}
{"title":"DR DR2W 2 Pins Nizn Drum Soft Ferrite Core 6x8 8x10 9x12 14x15 For Power Inductor","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/3c\/ef\/933d83e9a6ef764a7cdeb4c669ee-200x200-1\/dr_dr2w_2_pins_nizn_drum_soft_ferrite_core_6x8_8x10_9x12_14x15_for_power_inductor.jpg","attrs":{"Model Number":"Drum Core","Place of Origin":"Zhejiang, China","Brand Name":"careful","Minimum Order Quantity":"2000 pieces"}}
{"title":"NiZn Material Soft Ferrite Core R6*20 For Choke Coil 0.1-500mhz","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/d0\/a2\/9ff30dffdcd1eb801b06f78e7dc7-200x200-1\/nizn_material_soft_ferrite_core_r6_2a20_for_choke_coil_0_1_500mhz.jpg","attrs":{"Model Number":"R6*20","Place of Origin":"Zhejiang, China","Brand Name":"Careful","Certification":"ISO 9001: 2015 ROHS REACH"}}
{"title":"T157-26 Magnetic Iron Core Toroidal Soft 0.1-1000mhz for Transformer","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/4a\/44\/6411dd6c8f1b8d905466459b7118-200x200-1\/t157_26_magnetic_iron_core_toroidal_soft_0_1_1000mhz_for_transformer.jpg","attrs":{"Model Number":"T","Place of Origin":"Zhejiang, China","Brand Name":"careful","Minimum Order Quantity":"1000 pieces"}}
{"title":"Neodymium Block Strong Permanent Magnet Rare Earth N35 N33M Rectangular","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/d3\/1a\/577f9fc04ad995c471e0f1db538b-200x200-1\/neodymium_block_strong_permanent_magnet_rare_earth_n35_n33m_rectangular.jpg","attrs":{"Place of Origin":"Zhejiang, China","Brand Name":"Careful","Model Number":"N38","Minimum Order Quantity":"1800 pieces"}}
{"title":"Ik107B Low Losses Amorphous Nanocrystalline Toroidal Core For Common Mode Inductor Amorphous Core","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/a6\/8f\/07cba89995ab928fb8a7d99bc319-200x200-1\/ik107b_low_losses_amorphous_nanocrystalline_toroidal_core_for_common_mode_inductor_amorphous_core.jpg","attrs":{"Model Number":"T","Place of Origin":"Zhejiang, China","Brand Name":"careful","Certification":"ISO\/ROHS\/SGS"}}
{"title":"EMI NiZN Ferrite Ring Core Nizn Ferrite Core For Electronic And Electrical Equipment","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/e0\/14\/08577dbfbfc7e484782863b1b246-200x200-1\/emi_nizn_ferrite_ring_core_nizn_ferrite_core_for_electronic_and_electrical_equipment.jpg","attrs":{"Model Number":"T","Place of Origin":"Zhejiang, China","Brand Name":"careful","Certification":"ISO\/ROHS\/SGS\/REACH\/MSDS"}}
Careful Magnetism Co., Ltd. is a leading corporation with over 20 years of experience in Ferrite Core manufacturing. Established in 2001 as Huzhou Cifeng Industry Corporation, a key enterprise in Huzhou City, we have been recognized as a "High and New Technology Enterprise in Zhejiang Province." Our company has expanded to include 3 factories, serving a growing number of clients. With a team of over 1000 staff, including 120 management and technology professionals, we have established a technological center equipped with international-level automatic magnetic material examination equipment and the most advanced production line in the country. We specialize in manufacturing EMI and EMC Magnetic cores, offering over 2000 specifications. Our annual production capacity of 6000 tons of soft ferrite core has made us the largest production base of EMI core in the nation. Our sales value has reached 100 million US dollars, with over 60% of our products exported to Southeast Asia, the USA, and Europe, finding applications in IT and Intelligent Electric appliances from companies like IBM, DELL, AOC, PHILIPS, PANASONIC, and DYSON. Since our inception, we have established a comprehensive quality control system and obtained ISO9001, ISO 14001, REACH, ROHS, and IATF16949 certification. Our commitment to continuous improvement in management and product quality has led to a steadily increasing market share and a 100% year-on-year sales growth. We have earned a good reputation among customers and are recognized as an excellent supplier by many companies. Our slogan, "To pursue the perfection of details, the efficiency of execution," drives us to work diligently with friends from around the world to create a bright future.
Room 1303, Building 5, Lianjingfeng Business Center, Gongshu District, Hangzhou City, Zhejiang Province，China310015
Factory Location:
Hanshan Industrial Zone, Huzhou City, Zhejiang Province, China
Trade & Market
Company slogan:
Hangzhou Kefeng Electronics Co., LTD
OEM Overview:
Customized Solutions for Your Needs
With over 20 years of ferrite core manufacturing expertise, Careful Magnetism Co., Ltd. provides flexible OEM & ODM services to meet the diverse requirements of our global partners.
Our Capabilities
Product Customization: Support for special sizes, shapes, and performance requirements
Engineering Support: Experienced R&D team with 100+ engineers and technicians
Prototyping & Sampling: Quick turnaround for testing and evaluation
Flexible Production: Small batch to large-scale manufacturing with stable supply
Packaging & Branding: Tailored packaging and logo printing to enhance your brand image
Production Line:
Careful Magnetism Co., Ltd. was founded in 2001 and has grown into one of the leading ferrite core manufacturers in China. With more than 20 years of industry expertise, we operate three modern factories and employ over 1,000 skilled staff, including 120 management and technical professionals.
Our production capacity reaches 6,000 tons of soft ferrite cores annually, making us the largest EMI core production base in the nation. Our products cover over 2,000 specifications, widely used in IT, intelligent appliances, and electronic equipment.
Facilities & Equipment
International-Level R&D Center equipped with advanced magnetic material testing devices
Automated Production Lines ensuring precision and high efficiency
Strict Quality Control supported by ISO9001, ISO14001, ROHS, REACH, and IATF16949 certifications
Annual Output Value exceeding 100 million USD
R&D:
Innovation Drives Excellence
At Careful Magnetism Co., Ltd., we believe innovation is the foundation of growth. Our R&D center is equipped with international-level testing and analysis equipment, enabling us to design, develop, and improve high-performance ferrite cores to meet the demands of global markets.
Our R&D Strength
Dedicated R&D Team: Over 120 engineers and technicians with expertise in materials science and magnetic technology
Advanced Testing Facilities: Precision instruments for magnetic property analysis, durability testing, and performance simulation
New Product Development: Constantly expanding our product range with over 2,000 specifications available
Material Innovation: Focus on high-efficiency EMI/EMC solutions for IT, home appliances, automotive, and industrial applications
Intellectual Property: Continuous investment in patents and proprietary technologies
R&D Achievements
Established as a High and New Technology Enterprise in Zhejiang Province
Developed customized solutions for world-class brands such as IBM, DELL, PHILIPS, PANASONIC, DYSON
Successfully improved production efficiency and product reliability, supporting annual output of 6,000 tons of ferrite cores
Commitment to the Future
We are committed to sustainable innovation, investing in environmentally friendly processes and developing next-generation magnetic materials that contribute to energy efficiency and smarter electronics worldwide.
