# GSTAR > GSTAR is a leading China factory specializing in custom OEM Card Holder. As direct manufacturers and suppliers, we offer durable, stylish Card Holder in stock at low price. Request your free sample now to experience our quality and service! ## Contact Us - [Mail](mailto:sales@gstartec.com): sales@gstartec.com - [Mail](mailto:Sales03@gstartec.com): Sales03@gstartec.com - [Tel](tel:+86%2013265432331): +86 13265432331 - [WhatsApp](https://api.whatsapp.com/send?phone=8613265432331): 8613265432331 ## Social Media - [Facebook](http://www.facebook.com) - [Twitter](https://twitter.com) - [Youtube](https://www.youtube.com) ## Website Language Versions - [English](https://www.gstartec.com): Custom Card Holder Manufacturers & Suppliers - China Factory | GSTAR ## Website Navigation - [Home](https://www.gstartec.com/index.html): Home - [About Us](https://www.gstartec.com/aboutus.html): About Us - [Products](https://www.gstartec.com/products.html): Products - [RFID Wallet](https://www.gstartec.com/rfid-wallet.html): RFID Wallet - [Minimalist Metal Wallet](https://www.gstartec.com/minimalist-metal-wallet.html): Minimalist Metal Wallet - [Carbon Fiber Money Clip​](https://www.gstartec.com/carbon-fiber-money-clip.html): Carbon Fiber Money Clip​ - 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[Laptop Stand](https://www.gstartec.com/laptop-stand.html): Laptop Stand ## FAQ - **Q: 1. What specific grades of aluminum and carbon fiber are used in Gstar’s metal wallets?** A: Our metal wallets are crafted using aerospace-grade 6061-T6 aluminum and 3K twill carbon fiber from Taiwan, both chosen for their exceptional balance of lightweight performance and structural strength.The aluminum surfaces undergo a Type II anodizing process, which increases surface hardness to industry standards. This treatment significantly improves scratch resistance, ensuring the wallet can withstand daily wear. - **Q: 2. How do you ensure the longevity of the elastic band or tension mechanism in your slim wallets?** A: We ensure the longevity of our elastic band and tension mechanism through a combination of advanced nylon material selection and rigorous durability testing. Each band is engineered using a high-density polyester fiber blended with latex strands, optimized to deliver both elasticity and structural resilience.This specific composition prevents premature loosening while maintaining consistent tension over time. To validate real-world performance, our internal laboratory conducts 10,000+ stretch and fatigue cycle tests, simulating extended daily use. - **Q: 3. Does your metal card holder provide 100% protection against 13.56 MHz frequency scanning?** A: Our metal card holder is engineered to provide effective protection against 13.56MHz frequency scanning, which is commonly used by contactless credit cards, debit cards, and ID cards. In addition, our shielding performance has been tested in accordance with ISO/IEC 14443 standards, and also passed the RFID FCC ID testing to ensure reliable protection for widely used contactless cards. - **Q: 4. Is the metal interior designed to prevent degaussing or scratching of the card's magnetic strip?** A: We incorporate an anti-scratch interior lining, which creates a soft buffer between the cards and the metal frame, reducing friction during insertion and removal. In addition, all internal edges are precisely finished using CNC chamfering, resulting in smooth, rounded corners that prevent abrasion or wear on the card surface. - **Q: 5. Can Gstar develop a custom mold for a unique metal wallet structure?** A: Gstar has strong in-house R&D capabilities to develop custom molds for unique metal wallet structures.We support a full development process, from initial 3D drawings and structural design to CNC prototyping, ensuring that your concept is accurately translated into a functional product.