News
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Tianjin Ruiyuan Electrical Material Co., Ltd. Achieves Full EU PPWR Compliance for Electromagnetic Wire Products, Backed by SGS Testing for Smooth Export
In response to the official implementation of the European Union’s Packaging and Packaging Waste Regulation (PPWR), Tianjin Ruiyuan Electrical Material Co., Ltd. has recently announced that the packaging of its magnet wire products exported to the EU market has achieved full-chain compliance. Bac...Read more -
Designing Transformers for 100kHz+ Switching: Litz Wire vs. Triple Insulated Wire Trade-offs
When working on transformers running above 100kHz, skin effect and proximity effect are hard to avoid. For every new project, one of the first things I struggle with is picking between litz wire and triple insulated wire. Litz wire is made of many fine, individually insulated copper strands twist...Read more -
Huizhou Fengqing Industrial and Tianjin Ruiyuan Collaborate on Advanced PEEK Wire Technology for High-End Cable Applications
On September 27, 2026, the visiting delegates of Huizhou Fengqing Industrial Co., Ltd., General Manager Mr. Huang and Assistant Manager Mr. Tang toured and exchanged at Tianjin Ruiyuan Electric material Co., Ltd. Yuan, General Manager of Tianjin Ruiyuan welcomed Mr. Huang and his delegation to th...Read more -
Unlocking High-Performance Power: The Benefits of ETFE Extruded Litz Wire
A coil running at 80 kHz does not fail all at once. It usually starts with a slow temperature rise, then insulation darkens, then the winding shorts. By the time the equipment trips, the damage is already done. ETFE extruded litz wire is aimed at that failure mode. The conductor uses multiple twi...Read more -
How rectangular copper magnet wire considerably improves EV motor’s efficiency?
The drive systems of EV are mainly made of 3 units, the electric drive assembly (motor), the energy control hub (electronic control system), and the power transmission hub (reduction gear). As heart of the vehicle, the motor converts electrical energy into mechanical energy through electromagneti...Read more -
Solderability Comparison: Polyurethane vs. Polyesterimide Coatings in Magnet Wire Applications
In the competitive magnet wire industry, coating selection directly impacts manufacturing efficiency, production costs, and end-product reliability. Polyurethane and polyesterimide enamels represent two distinct approaches to balancing solderability with thermal performance, and understanding the...Read more -
Performance Comparison and Application Analysis of Three Types of Fluoropolymer Insulated litz Wires
In view of the current market demand, the technical department of Tianjin Ruiyuan Electric Materials Co., Ltd. recently carried out a research and analysis on the characteristics and applications of three extruded litz wire products ：ETFE, FEP, PFA fluoroplastic insulation. Using 0.10mm single w...Read more -
PET Wrapping Litz Wire vs PI Wrapping Litz Wire: Which Is Right for Your Application?
When selecting litz wire for high-frequency applications, the choice of insulation wrapping plays a critical role in performance, durability, and cost-efficiency. Two of the most popular options on the market are PET (Polyethylene Terephthalate) wrapping litz wire and PI (Polyimide) wrapping litz...Read more -
What Makes Nomex® Paper Wrapped Winding Wire the Right Choice for Dry Type and Traction Transformers?
If you’ve ever opened up a transformer that’s been running for years without trouble, chances are you’ll find Nomex® paper wrapped wire inside. There’s a reason it shows up in dry-type units, traction transformers, substations, and even oil-filled coils – it just works, an...Read more -
Compliance and Innovation: A Pragmatic Approach of Ruiyuan Electric for the EU PPWR Packaging Regulation
In an unprecedented move, the packaging of every product exported to the EU market is now subject to strict examination with the EU’s Packaging and Packaging Waste Regulation (PPWR) coming into force. 2.4 Capacity and Capability of PPE Packaging Supplier As a professional electromagnetic wire exp...Read more -
Taped litz Wire for New Energy Electric Vehicles
These days, electric cars are selling really well worldwide. Most new models use 400V or 800V high voltage systems, and taped litz wire is a must-have material for all their electric components. We produce this litz wire with pure copper, wrapped with thin insulating demanded by customer. It wor...Read more -
FIW vs TIW – Which Insulated Wire Is Right for Your Transformer Design?
To begin with, in terms of structure: FIW wire is multi-layer coating. It is made up of multiple coats of insulating varnish, forming a very thick insulation layer which is treated as a single conductor. In contrast, TIW wire( triple insulated wire) is made of three separate layers of insulation,...Read more
