Import Efd Size High Frequency Transformer — Buy in wholesale FOB from Supplier in China
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Efd Size High Frequency Transformer
The Efd Size High Frequency Transformer series supplied by Tianjin Grewin Technology Co., Ltd. are compact ferrite transformers built for high‑frequency power conversion. The catalogue lists five standard models - EFD‑12, EFD‑15, EFD‑20, EFD‑25 and EFD‑30 - each distinguished by pin count and precise core dimensions. For example, the EFD‑12 model has eight pins and a core measuring 6 mm (A) × 17 mm (B) × 20 mm (C) with a height of 3.0 mm. The larger EFD‑30 version uses twelve pins and a 12 mm × 31.6 mm × 35.5 mm core with a 5 mm height.
All units employ N67‑grade ferrite material, providing high magnetic flux density and low core loss. The design incorporates strong anti‑interference features, distributed capacitance and low leakage inductance, which are typical requirements for Class B (130 °C) and Class F (155 °C) UL insulation systems. The transformers meet ISO 9001, CE and SGS approvals, and an IEC test report is supplied for each batch. Such specifications align with industry standards for high‑frequency transformers used in electronic equipment.
Typical applications include fax machines, PBX systems, PCB‑level power supplies, computers, televisions, scanners, duplicators, mobile adapters and printers. Buyers such as OEM electronics manufacturers and system integrators commonly request custom winding or OEM/ODM services that the supplier offers. Shipping is scheduled within ten working days after receipt of pre‑payment or an irrevocable sight L/C, with T/T or L/C payment options as described in the trade terms.
| Model | EFD‑12, EFD‑15, EFD‑20, EFD‑25, EFD‑30 |
| Pin Count | 8 (EFD‑12), 10 (EFD‑15, EFD‑20, EFD‑25), 12 (EFD‑30) |
| Core Dimension A (mm) | 6 (EFD‑12), 7.3‑7.5 (EFD‑15), 9.4‑9.7 (EFD‑20), 12‑13.4 (EFD‑25), 12 (EFD‑30) |
| Core Dimension B (mm) | 17 (EFD‑12), 18.2‑19.3 (EFD‑15), 25.3‑24 (EFD‑20), 29.7 (EFD‑25), 31.6 (EFD‑30) |
| Core Dimension C (mm) | 20 (EFD‑12), 21.35‑22.6 (EFD‑15), 27.7‑26.8 (EFD‑20), 35.4‑31.5 (EFD‑25), 35.5 (EFD‑30) |
| Height E (mm) | 3.0 (EFD‑12), 2.5‑3.0 (EFD‑15), 3.0‑3.75 (EFD‑20), 5 (EFD‑25, EFD‑30) |
| Typical core material | N67 grade ferrite (typical) |
| Typical operating frequency | 20 kHz to 100 kHz (typical) |
| Typical insulation class | UL Class B (130 °C) and Class F (155 °C) (typical) |
Tianjin Grewin Technology Co., Ltd. is located at 2# Meinian Plaza No.16 Dongting Road, Tianjin 300222, China. The supplier is listed with a harbour‑tier verification, indicating platform‑level validation, although the recorded response rate is currently 0 % and average response time is not available.
The company holds ISO 9001, CE and SGS approvals and provides an IEC test report for each transformer batch. It offers both OEM and ODM services, allowing buyers to request custom winding or fully bespoke transformer designs. Trade terms include shipment within ten working days after receipt of pre‑payment or an irrevocable sight L/C, with T/T or L/C payment options as detailed in the listing.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Sourcing Efd Size High Frequency Transformer from Tianjin Grewin Technology Co., Ltd. - China Import Guide
Before placing an order, verify that the supplier can provide the latest ISO 9001, CE and SGS certificates together with the IEC test report for the specific model. Check that the core dimensions, pin count and height match the technical drawing you require, and request a sample if dimensional tolerance is critical for your assembly line.
Shipping is normally arranged within ten working days after receipt of a pre‑payment or an irrevocable sight L/C. The supplier mentions T/T or L/C payment options and does not state a specific Incoterm, so the buyer should confirm whether the terms are FOB, CIF or another arrangement. Clarify the exact lead‑time for the chosen model, especially if custom winding is requested, as this may extend the production schedule.
The company states that 100 % of the transformers are tested before shipment, and an IEC compliance report is supplied. Arrange for a third‑party inspection if your quality system requires independent verification of parameters such as inductance, resistance and insulation resistance. Request all relevant documentation - test certificates, material safety data sheets and packing lists - to ensure smooth customs clearance and traceability.
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30 suppliersBuy Efd Size High Frequency T in Bulk — Verified Supplier in China
When sourcing Efd Size High Frequency Transformer for your business, securing the right balance of quality and cost is essential. Tianjin Grewin Technology Co., Ltd., a verified supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1.5/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Electric Transformers sector with strong demand from importing countries worldwide.
Efd Size High Frequency T Specifications, Trade Terms & Pricing
Importing Efd Size High Frequency T requires careful attention to shipping logistics, customs compliance, and secure payment terms. Tianjin Grewin Technology Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Tianjin Grewin Technology Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Efd Size High Frequency T has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Electric Transformers category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Efd Size High Frequency T — Shipping, Logistics & Customs
Importing Efd Size High Frequency T requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Efd Size High Frequency T
What is the wholesale price of Efd Size High Frequency Transformer?
The current listed wholesale price for Efd Size High Frequency Transformer from Tianjin Grewin Technology Co., Ltd. is $1.5/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Tianjin Grewin Technology Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Efd Size High Frequency T?
The supplier, Tianjin Grewin Technology Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Efd Size High Frequency T. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Efd Size High Frequency Transformer?
The HS Code classification for Efd Size High Frequency Transformer depends on the specific grade and form. Contact Tianjin Grewin Technology Co., Ltd. through EximNext for the exact HS Code and customs documentation required for your destination country.
How can I import Efd Size High Frequency T from China?
To import Efd Size High Frequency T from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Tianjin Grewin Technology Co., Ltd.. Ensure you have the necessary import licenses for Electric Transformers products in your destination country.
Is Tianjin Grewin Technology Co., Ltd. a verified supplier?
Yes, Tianjin Grewin Technology Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Efd Size High Frequency Transformer?
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Tianjin Grewin Technology Co., Ltd. through EximNext.
What packaging options are available for bulk orders of Efd Size High Frequency T?
Tianjin Grewin Technology Co., Ltd. offers Efd Size High Frequency T with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Efd Size High Frequency T the most?
Efd Size High Frequency T is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Tianjin Grewin Technology Co., Ltd. through our platform.
What certifications does this Efd Size High Frequency T supplier hold?
Tianjin Grewin Technology Co., Ltd. maintains international quality certifications. These ensure that the Efd Size High Frequency T meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Efd Size High Frequency Transformer on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Tianjin Grewin Technology Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Tianjin Grewin Technology Co., Ltd..
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