Innovative Manufacturing · Since 2002
Your Professional Manufacturer of
Truck Tool Box Lock

High-quality OEM Product Quality
Competitive Price
Professional Solution Design Capability
Fast and Timely Delivery Time

Featured Products

These are the products we recommend to you. Of course, we provide customized services

20+

Years of Experience

About Our Company

Ningbo East Sea Machinery Co., Ltd (ESM) was founded in 2002 and specializes in manufacturing door locks, latches, hinges, folding steps, and handles for trucks, trailers, vessels, and special vehicles. With a strong focus on quality and efficiency, we have become a trusted partner in the vehicle component industry. Located in Ningbo, China, ESM operates an 8,000 m² facility and employs over 100 skilled workers. We are ISO9001 certified and committed to delivering precision-engineered components with competitive pricing and on-time delivery for customers worldwide.

Competitive Advantages

With in-house design and a complete production chain, ESM ensures consistent quality and fast turnaround. We produce high-precision components for global markets, supported by strong technical capabilities and strict quality control.
Services

We offer a full range of services, including product design, engineering, and fabrication of casting, stamping, and CNC parts. Our flexible OEM/ODM support enables customized solutions for clients across the US, Europe, and beyond.

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Why Our Company is Your Gateway to Success.

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We deliver precision-engineered hardware solutions for commercial vehicles and industrial applications. Backed by decades of expertise, certified quality, and strong global partnerships, we help you drive efficiency, durability, and performance through OEM innovation.

100+

Enterprise employees
8000㎡

Factory area
10M+

OEM Units Delivered

20 Years of Expertise

Founded in 2002, we focus on locks, hinges, folding steps, and handles—refining every detail with precision and durability trusted across industries.
Custom R&D Support

Our engineers work with clients from concept to production, optimizing structural design, usability, and cost-effectiveness.
Premium OEM Quality

We use high-grade materials and implement strict quality standards. Our products outperform industry benchmarks in durability and service life.
Trusted by Global Leaders

Serving partners in the USA, Canada, and Australia, we’ve delivered over 10 million OEM products with proven reliability in demanding environments.
Agile Production

From casting and stamping to CNC machining and sheet metal fabrication, our integrated production ensures rapid response and customization.
Quality Assured

Our ISO9001-certified facility upholds rigorous quality systems, ensuring consistency, compliance, and confidence in every shipment.

Products for Various Application Scenarios

We can provides solutions for a wide range ofapplications

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Customer-Centered Approach

Incorporate testimonials from clients around the world to emphasize trust and satisfaction.

We’ve been sourcing whale tail locks from this supplier for over two years now. The zinc alloy structure and corrosion-resistant finish hold up perfectly in the field, even through our Midwest winters. Zero issues with reliability — just great performance.

Danie

These Type I handles have been a solid upgrade to our fleet. The grip is ergonomic, even with gloves on, and the surface finish resists rust very well. We had one unit with a slightly tight latch, but it was easily adjusted. Overall, excellent quality and feel.

Mateo

We use these 304 stainless steel latches on our industrial outdoor storage boxes. Their durability is impressive — no corrosion even after months of rain and salt exposure. The latch action is crisp and secure. Highly recommend.

Klaus

Top-tier stainless steel hinges. We use them on custom trailer doors, and they’ve been through harsh coastal weather without a single issue. The load capacity is more than sufficient and they’re easy to install. Excellent value for money.

Liam

The folding steps are incredibly space-saving and feel stable when in use. We chose the steel version for cost efficiency, and so far it's been reliable across various vehicle types. Slightly heavy, but very sturdy and safe.

Chen

Gain the Trust of Global Customers

Certificates and Honors

Our high-quality products and expertise have earned numerous industry-recognized certifications. Validated by domestic and international authorities, we adhere to rigorous standards, ensuring quality at every stage. For us, certifications represent not just honors, but the foundation of customer trust, guaranteeing reliable and lasting value.

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Need a Deeper Understanding of Our Products and Services?

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Your One-Stop Customization Solutions

We can provide high-quality customized solutions, ensuring every step is precise, efficient, and satisfactory.

Requirements Communication

Clients communicate their customization needs through online consultation, phone communication, or offline negotiations, including product type, functional requirements, appearance design, and packaging specifications.

Design & Sampling

Based on confirmed customization plans, our design team creates product designs and technical drawings. We complete sample production within 30 working days for client confirmation.

Batch Production

After sample approval, we formulate production plans, arrange raw material procurement and production scheduling, following standardized processes and quality control systems.

Quality Inspection

Our quality inspection team conducts comprehensive testing including appearance inspection, functional testing, and performance testing to ensure every product meets requirements.

Packaging & Shipping

Qualified products are packaged according to client requirements, with appropriate logistics methods selected for shipping, and tracking information provided to clients.