Nanpi Haokai Hardware Products Co., Ltd., strategically located near Bohai Bay and just 1 kilometer from the Beijing-Shanghai Expressway, has established itself as a leading professional manufacturer in the metal fabrication industry. With over two decades of continuous innovation and development, our company has achieved remarkable success in precision metal part production, serving both domestic and international markets with high-quality customized solutions.
As a privately-owned enterprise committed to technological advancement, we specialize in the design, development, and production of insulating spring assemblies, precision stamping parts, CNC machined components, and injection-molded parts. Our comprehensive product range includes several key series that cater to diverse industrial requirements, all manufactured under strict ISO 9001:2015 quality management systems.

Advanced Manufacturing Capabilities
Our production facility is equipped with state-of-the-art machinery that enables us to handle projects of varying complexity and scale. With over 30 stamping presses ranging from 30 to 250 tons, we can accommodate both small-batch prototyping and large-volume production runs. Our CNC machining department features more than 30 advanced machines including automatic lathes, CNC walking-heart machines, and precision injection molding equipment.
The technical team at Nanpi Haokai Hardware comprises 16 professional engineers and 7 senior technicians, supported by a total workforce of over 70 skilled employees. This combination of technical expertise and manufacturing capacity allows us to offer complete one-stop services from product design and prototyping to mass production and after-sales support.
Our quality management system strictly follows ISO 9001:2015 standards, ensuring every component we produce meets international quality requirements. This commitment to quality has helped us establish long-term cooperative relationships with numerous large enterprises worldwide, earning us consistent recognition and praise from our clients.
Core Product Series
As a specialized insulating spring assembly manufacturer, we offer several key product lines that demonstrate our technical capabilities and commitment to quality:
1. Insulating Spring Assemblies
Our custom-designed insulating spring assemblies feature precise dimensional control and excellent electrical insulation properties. Manufactured using high-grade materials with specialized surface treatments, these components provide reliable performance in demanding electrical applications. We offer complete customization options including material selection, dimensional specifications, and insulation requirements to meet specific customer needs.

2. Precision Stamping Parts
Our metal stamping capabilities cover a wide range of components including the popular metal shovel series. These products are manufactured through integrated stretching and bending processes from single metal sheets, ensuring seamless construction without welds or joints. The reinforced structure with smooth rounded edges provides exceptional durability and ease of assembly, reducing customers’ production costs by eliminating secondary processing requirements.
Key features of our stamping parts include:
- Material options: Cold-rolled steel, stainless steel, aluminum alloy, copper
- Customizable dimensions and shapes
- Integrated reinforcement structures
- Standardized mounting holes for easy installation
- Surface treatments: Polishing, plating, anodizing
3. CNC Machined Components
Our CNC machining services specialize in producing high-precision components like the brass connecting rods. These parts are manufactured as single-piece constructions with exceptional dimensional accuracy and smooth surface finishes. The use of high-quality brass ensures excellent electrical conductivity and corrosion resistance, while our advanced machining capabilities allow for tight tolerances and complex geometries.
Customization options for CNC components include:
- Material selection: Brass, phosphor copper, purple copper, aluminum, iron
- Dimensional customization within ±0.01mm tolerance
- Surface treatments: Tin plating, zinc plating, polishing
- Structural modifications for specific applications
Application Industries
Nanpi Haokai Hardware serves a diverse range of industries with our customized metal components:
| Industry | Typical Applications | Component Examples |
|---|---|---|
| Automotive | Electrical systems, engine components, body parts | Connectors, terminals, brackets |
| Medical | Diagnostic equipment, surgical instruments | Precision housings, connectors |
| Electronics | Consumer devices, industrial controls | Shielding cases, heat sinks |
| Energy | Renewable energy systems, power distribution | Insulating components, connectors |

Customization Capabilities
As a professional manufacturer specializing in non-standard components, we offer complete customization services to meet specific customer requirements:
- Material Selection: Choose from a wide range of metals including various steels, copper alloys, aluminum, and specialized materials based on your application needs
- Dimensional Customization: Precision manufacturing to your exact specifications with tolerance control within ±0.01mm for critical dimensions
- Surface Treatments: Multiple finishing options including plating (zinc, nickel, chrome), anodizing, polishing, and specialized coatings for corrosion resistance or aesthetic requirements
- Structural Design: Our engineering team can assist with component design optimization to improve manufacturability while maintaining functionality
- Prototyping Services: Rapid sample production to validate designs before full-scale manufacturing
FAQ
What makes Nanpi Haokai Hardware different from other metal component manufacturers?
Our competitive advantage lies in our complete vertical integration – from design and prototyping to mass production and quality control, all under one roof. This enables us to maintain strict quality standards while offering competitive pricing and shorter lead times. Our 20+ years of industry experience and ISO 9001:2015 certification further ensure reliable performance for our customers.
How do you ensure component quality during production?
We implement comprehensive quality control measures at every stage: incoming material inspection, in-process quality checks, and final product testing. Our advanced measuring equipment including CMM (Coordinate Measuring Machines) ensures dimensional accuracy, while specialized testing equipment verifies material properties and surface finishes according to customer requirements.
What is your minimum order quantity for custom components?
We accommodate both small-batch and large-volume orders. For custom components, our minimum order quantity typically starts at 500 pieces, though we can discuss smaller quantities for complex or high-value parts. We also offer prototyping services with no minimum quantity requirement to help customers validate designs before full production.
How long does it take to produce custom metal components?
Production lead times depend on component complexity and order quantity. For standard parts from our existing product lines, we can typically ship within 7-15 days. For custom components, the timeline includes 3-7 days for prototyping and 15-30 days for mass production after sample approval. We work closely with customers to optimize production schedules and meet project deadlines.
What industries do your components primarily serve?
Our components find applications across multiple industries including automotive (electrical systems, engine components), medical (diagnostic equipment, surgical instruments), electronics (consumer devices, industrial controls), energy (renewable energy systems, power distribution), and general industrial manufacturing. We specialize in creating customized solutions for each industry’s specific requirements.
Summary
Nanpi Haokai Hardware Products Co., Ltd. stands as a trusted partner for businesses seeking high-quality custom metal components. With over two decades of experience in precision manufacturing, we offer complete solutions from design to production for insulating spring assemblies, precision stamping parts, CNC machined components, and injection-molded parts. Our ISO 9001:2015 certified facilities, advanced equipment, and skilled technical team enable us to deliver components that meet the most demanding specifications across various industries.
We remain committed to our founding principles of technological innovation and quality excellence, continuously improving our manufacturing processes and expanding our capabilities to better serve our customers. Whether you require standard components or fully customized solutions, Nanpi Haokai Hardware is prepared to be your reliable long-term manufacturing partner.