Innovative conductive foam for precise electronic EMI shielding

Shenzhen, July 2026- With the rapid development of 5G communication, smart wearable devices, and automotive electronics, electromagnetic compatibility (EMC) and electrostatic discharge (ESD) protection have become key challenges in product design. With excellent shielding performance, reliable compression recovery, and flexible customization capabilities, this product has become a trusted solution for leading brands in the consumer electronics and communication fields.

Core Value: From Materials Science to Applications
Conductive foam is a kind of high-performance composite material, which is made by treating polymer substrate (such as polyurethane) with special metallization process or wrapping it with conductive fabric. It combines the flexibility and elasticity of polymer materials with the conductivity of metals, providing reliable grounding, shielding, and buffering protection for precision electronic components.

Key performance characteristics include:

High EMI shielding efficiency: through optimized plane (Z-axis) resistivity, foam can provide more than 75dB shielding efficiency in a wide frequency range, effectively block electromagnetic interference, and ensure stable operation of equipment.

Excellent compression recovery: This material supports a wide compression range, with a maximum compression ratio of up to 60%. Its low compression permanent deformation ensures long-term sealing and shielding integrity during assembly and throughout the entire product lifecycle.

Flame retardancy and environmental compliance: This product complies with UL94 V-0 flammability standards, RoHS requirements, and meets strict safety and environmental regulations in the electronics industry.

Engineering support: not just material supply
The company was founded in 2011 and is headquartered in Longhua, Shenzhen. It is a national high-tech enterprise specializing in the field of EMC. Johan has set up R&D centers and manufacturing bases in Shenzhen, Hunan and Shandong, realizing the domestic substitution of key conductive foam technology, and has a number of core patents.

The company provides one-stop services, including material selection, precision die-cutting, adhesive lamination, and conductive processing. The thickness can be customized, and the product can be die cut into various shapes, including I/O, rectangular, and panel gaskets, with or without conductive adhesive backing. The deep integration of material expertise and precision manufacturing has made Johan a long-term supplier to leading international brands such as Oppo, Vivo, Amazon, and Lenovo. Foam is widely used in smart phones, tablets, laptops, telecommunications cabinets and smart home devices.

Application scenarios: From consumer electronics to emerging industries
Johann's conductive foam solution is used in several key applications of electronic equipment:

Smartphones and wearable devices: camera module grounding, display panel shielding, antenna isolation, and motherboard grounding to address EMI/ESD issues in slim designs.

Laptops and tablets: CPU shielding, I/O interface sealing, and internal structural buffering to ensure signal integrity in compact components.

Telecommunications and new energy: EMC sealing for 5G base stations and telecommunications cabinets, as well as battery pack buffering and electrical connections in electric vehicle battery modules.

With the rapid growth of the Internet of Things, artificial intelligence hardware, and new energy vehicle markets, the demand for high reliability and lightweight EMI shielding solutions continues to rise. Johann Materials is still committed to its core principles - application focus, domestic substitution and stable delivery, and will continue to provide competitive conductive foam products and services for global electronics manufacturers.

About Shenzhen John Material Technology Co., Ltd.
Johann Materials was founded in 2011 and is a national high-tech enterprise and a national "little giant" enterprise, specializing in providing EMC (electromagnetic compatibility) products and customized adhesive solutions for the electronics industry. The core products include innovative wrapped conductive foam, high-performance conductive shielding tape and advanced thermoelectric composite film. The company is committed to becoming a trusted global partner in the field of EMC solutions.