
What base materials do you use?
We use a range of base metals depending on product structure, detailing requirements, weight preference, and budget. The most commonly used materials for custom metal pins, keychains, medals, and challenge coins include brass, zinc alloy, iron, stainless steel, aluminum, and sterling silver.
Below are the most popular material choices based on high-demand product categories:
Brass – Premium Stamped Enamel Pins & Medals
Brass is typically recommended for higher-end lapel pins and detailed stamped products where edge clarity matters.
─ Excellent ductility for precise stamping
─ Sharp, clean logo lines
─ Premium weight and feel
─ Ideal for soft and hard enamel applications
Zinc Alloy – 3D & Cast Products
Zinc alloy is preferred for dimensional designs, spinning keychains, and thicker commemorative items.
─ Suitable for 3D shapes and hollow designs
─ Flexible for complex molds
─ Cost-efficient for thicker products
─ Excellent for die casting
Iron – Cost-Effective Stamped Products
Iron is ideal for cost-sensitive promotional programs.
─ Lower material cost
─ Suitable for flat stamped designs
─ Good for high-volume promotional items
Stainless Steel – Etched & Functional Products
Best for flat, sleek, or utility-focused products.
─ Corrosion resistance
─ Modern industrial appearance
─ Suitable for thin etched designs
Aluminum – Lightweight Bottle Openers & Tags
─ Lightweight
─ Rust-resistant
─ Ideal for large-volume giveaways
925 Sterling Silver – Fine Jewelry & Premium Collectibles
Sterling silver is selected for luxury positioning and collectible value.
─ Custom 925 silver coins
─ Sterling silver cufflinks
─ Silver lapel pins
What base materials do you use? | Jin Jumbo
Jin Jumbo develops custom metal gifts, lapel pins, challenge coins, and keychains for global promotional and corporate markets. Backed by over 35 years of precision manufacturing and OEM ODM development support, we help distributors and brands source metal products that combine stable quality, detailed craftsmanship, and dependable commercial value.
Our production structure is built around the needs of promotional product distributors who require reliable supply across multiple categories. From sports medals and police badges to golf accessories and custom tags, Jin Jumbo focuses on manufacturing that improves workflow efficiency, supports strict quality control, and strengthens product value in the metal gifts market.
For international buyers, Jin Jumbo offers more than isolated products. We provide a manufacturing partnership shaped by responsive communication, flexible customization, and long-term production consistency. This helps customers build stronger promotional product lines with dependable sourcing, practical product positioning, and factory-direct quality they can confidently rely on.