
This product is a stamped/drawn part, made of stainless steel, aluminum foil, nickel-plated steel sheet, etc., precision stamped and drawn to form a smooth surface, free of scratches and oxidation, with good sealing performance, effectively protecting the battery cell and preventing leakage and short circuits. The entire series is compatible with various battery cell specifications, with precise dimensions, materials that meet battery safety standards, corrosion resistance, and oxidation resistance. Customized opening styles, thicknesses, and surface treatments are supported. Common specifications are readily available, and compliance testing reports can be provided.
Customized according to the drawing
Customized according to the drawing
High-quality carbon steel, alloy steel, stainless steel, etc.
Environmentally friendly blue-white zinc, colored zinc, black zinc, environmentally friendly nickel plating, zinc-nickel alloy plating, Dacromet coating, electrophoresis, PVD, stainless steel natural color, stainless steel passivation, etc.
Production of various types of batteries, including lithium batteries, nickel-metal hydride batteries, and dry cell batteries, used to encapsulate and protect battery cells from external impacts, suitable for new energy vehicles, electronic devices, energy storage devices, small household appliances, and other scenarios.
Do you need non-standard fasteners, precision metal parts, or custom structural components for a specific application?
Yongji helps you develop and manufacture special parts and custom products based on your drawings, samples, technical requirements, and target application scenarios.
Whether you need prototype quantities, pilot production, or stable mass supply, we provide an integrated solution from engineering review to production and delivery.
From fasteners to structural parts, Yongji offers integrated development and manufacturing for a wide range of custom precision hardware products.
Whether you need a few pieces for validation, small batches for development, or large volumes for mass production, we can support your project at different stages.
With integrated manufacturing resources in China and Vietnam, Yongji helps customers achieve stable quality, scalable production, and reliable delivery.

Yongji Precision Hardware is a global manufacturer specializing in precision fasteners and metal structural components. We are China Battery Housing-Stamping Parts Suppliers and Wholesale Battery Housing-Stamping PartsExporter && Company. Founded in 2003, the company has over two decades of experience serving international OEM and ODM customers across multiple industries.
With integrated manufacturing capabilities including cold heading, stamping, CNC machining and sheet metal fabrication...