• 20 + Years OEM Expertise

    Having specialized in the OEM field for more than 20 years, with extensive knowledge and skills accumulated over the years.

  • Exceptional Quality

    Our strict quality control measures ensure that every detail meets and exceeds industry standards.

  • Competitive Pricing

    Our pricing is competitive, without compromising on quality, allowing you to get the best return on your investment.

  • On Time Delivery

    Our efficient production and logistics ensure that your orders are delivered on time. We offer a comprehensive range of services including FOB, DDP, consignment, etc.

FEATURED PRODUCTS

    About Us

    Ningbo United Machine Co., Ltd.

    Forged in the heart of China’s dynamic manufacturing landscape in 2002, Ningbo United Machine Co., Ltd. has steadily evolved into a premier engineering-centric force, specializing as a trusted OEM (Original Equipment Manufacturer) and ODM (Original Design Manufacturer) partner. Our foundation rests upon a relentless pursuit of engineering excellence, manifested in the creation of highly diversified, technically sophisticated products that power critical operations across numerous global industries. Over two decades of unwavering dedication have solidified our reputation as more than a supplier—we are a seamless extension of our clients’ innovation chains, a pillar of reliability in their quest for quality and efficiency.
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    United Machine is the professional of the Die Casting, Sheet Metal , Plastic Injection Molding  manufacturer and supplier in China. You can rest assured to buy the products from our factory and we will offer you the quality after-sale service.

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    News

    What Is CNC Milling and How Does It Create Precision Parts for Modern Manufacturing?

    What Is CNC Milling and How Does It Create Precision Parts for Modern Manufacturing?

    ​CNC Milling has become one of the most important precision manufacturing technologies for producing complex metal and plastic components. This article explains what CNC Milling is, how the process works, its advantages, applications, common challenges, and how manufacturers can select the right machining partner. By understanding the complete process, engineers, purchasing managers, and product developers can reduce production risks, improve part quality, and achieve better cost efficiency.

    What Is Zamak Die Casting and How Does It Create Precision Metal Parts?

    What Is Zamak Die Casting and How Does It Create Precision Metal Parts?

    The Zamak family commonly includes Zamak 2, Zamak 3, Zamak 5, and Zamak 7, with each grade offering different combinations of strength, ductility, fluidity, surface quality, and dimensional performance. Because zinc alloys can fill complex molds efficiently and support thin walls, fine details, and attractive surface finishes, Zamak die casting is widely used for hardware, automotive components, electronics, appliances, consumer products, and industrial parts.

    What Critical Factors Should You Evaluate When Selecting Sand Casting For Metal Component Manufacturing?

    What Critical Factors Should You Evaluate When Selecting Sand Casting For Metal Component Manufacturing?

    Industrial hardware designers and manufacturing partners need to assess multiple technical dimensions before committing to a metal forming workflow. Sand Casting brings unique process capabilities for large‑size and complex‑form metallic parts, yet project suitability depends on geometry constraints, material compatibility, surface finishing expectations and production‑volume realities. This overview walks through practical evaluation criteria that help technical teams align process selection with end‑component functional requirements, covering material behaviour, design boundary conditions, process‑linked tolerances and downstream processing considerations for real‑world industrial deployments.

    How Does Sand Casting Shape the Backbone of Modern Metal Manufacturing?

    How Does Sand Casting Shape the Backbone of Modern Metal Manufacturing?

    Sand Casting remains a cornerstone of metal fabrication, enabling the production of complex components across countless industries. This article outlines the fundamental steps, molding variations, material compatibility, design rules, common defects, and key applications of this versatile process. By understanding its strengths and limitations, engineers can effectively leverage sand casting for reliable, cost-efficient part production.

    How Can a High-Quality Clamping Ring Improve Industrial Component Reliability

    How Can a High-Quality Clamping Ring Improve Industrial Component Reliability

    This guide explains how a Clamping Ring is designed and manufactured, what specifications buyers should evaluate, and why stamping, material selection, and surface treatment matter when sourcing components for industrial applications. Based on the product information provided by United, this article also explores practical considerations for selecting a reliable China manufacturer and supplier.

    How Can a High-Quality Knuckle Base Improve Structural Performance and Manufacturing Efficiency

    How Can a High-Quality Knuckle Base Improve Structural Performance and Manufacturing Efficiency

    A knuckle base is a precision-engineered component that can play an important role in supporting mechanical assemblies where strength, dimensional stability, and reliable integration are essential. This guide explores the construction, material, die-casting process, key specifications, quality considerations, applications, and procurement factors of a Knuckle Base, using the product information provided by United as a practical reference.

    Why Is Shielded Metal Arc Welding (SMAW) Still One of the Most Reliable Welding Methods Today

    Why Is Shielded Metal Arc Welding (SMAW) Still One of the Most Reliable Welding Methods Today

    When industries require a dependable welding solution for construction, maintenance, and heavy fabrication, United provides professional welding equipment solutions featuring advanced Shielded Metal Arc Welding (SMAW) technology. Known for its simplicity, flexibility, and strong weld performance, SMAW remains one of the most widely applied arc welding processes in the world, especially in environments where durability and adaptability are critical.