About Shanghai Yidu — PTC Heater Manufacturer Since 2002
Shanghai Yidu Electronics Co., Ltd. develops and manufactures PTC heating elements and heater assemblies for OEM customers. Based in Shanghai, China, we support standard product sourcing and custom heater development, from initial requirements and sample evaluation to volume production.
Our PTC Heater Factory
Our product range includes insulated and conductive PTC air heaters, fan heater modules, aluminum-housed heating plates, and film-insulated PTC heating elements. We work with equipment manufacturers to match heater configurations to their electrical, thermal, and installation requirements.
For custom projects, our team reviews drawings and application requirements to help define heater dimensions, voltage, heating performance, mounting, and wiring. Sample evaluation allows customers to check the proposed configuration in their equipment before confirming production specifications.
Explore Our PTC Heater ProductsView Custom Heater Capabilities
See our production and testing operations in the company video.
Why Work with Shanghai Yidu?
Evaluate our manufacturing experience, engineering support, testing capabilities, and approach to production.
PTC Manufacturing Since 2002
Our experience spans PTC heating elements and assembled heaters, supporting both standard product supply and application-specific development.
Engineering Support for OEM Integration
We review your drawings, installation space, voltage, and heating requirements to help define a suitable heater configuration.
Production and Performance Testing
Our manufacturing process includes component screening, assembly, surface-temperature testing, and electrical-performance testing.
Support from Samples to Production
We support sample evaluation and specification confirmation before volume production, helping customers move from prototype testing to repeat orders.
Test Reports, Compliance Documents and Patents
Review the documents below for information on product testing, conformity, patents, and supplier assessment. For your sourcing review, contact our team to confirm which documents apply to the heater model and configuration you are considering.
PTC Heater EMC Test Report
PTC Heater EMC Conformity Document
PTC Heater EMC Conformity Document
PTC Heater RoHS Conformity Document
PTC Heater LVD Test Report
PTC Heater LVD Conformity Document
Heating Element Utility Model Patent
Alibaba.com Verified Supplier Assessment
PTC Heater Manufacturing and Testing
See the key stages of our heater production, from component preparation and assembly to temperature and electrical testing. The process shown provides an overview; specific operations and checks depend on the heater design.
Explore Our Manufacturing and Quality Control Process
1. Production Preparation
2. PTC Element Screening & Pairing
3. Lead Wire Processing
4. Component Assembly
5. Housing Pressing
6. Surface Temperature Testing
7. Electrical Performance Testing
8. Final Marking & Packaging
Let’s Find the Right PTC Heater for Your Application
A drawing, an existing heater model number, or a brief application description is enough to get started. Our engineers can help with model selection or custom development.
- Voltage and power (we cover 12-380V, 50-8000W)
- Dimensions and mounting method
- Air heating or surface/contact heating
- Target temperature
- Whether you also need a controller or sensor
What Happens Next
Engineer reply within 10 hours.
We confirm whether a standard model fits or a custom build is needed, and ask about anything missing.
Standard samples from stock.
Up to 3 pcs per request. The first piece is free; additional pieces are charged at the regular price for that model. You cover shipping.
Order on your scale.
Standard models from 1 pc, custom builds from 50 pcs.
Heaters, controllers and sensors, supplied as a matched set.