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Dedicated to Manufacturing Mastery

Ningbo Prolangh Hardware Co., Ltd. – 30 years of excellence in OEM/ODM hardware manufacturing. Specializing in 3 Star Cylinders, Door & Window Hardware, Traffic Locks, Industrial Locks, and Pet Doors.

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Meet Us at Canton Fair 2025

Oct. 15–19, 2025 | Hall 10.1, Stand D25, Guangzhou

FEVENT MÁS 2025

Jun. 17–19, 2025 | Stand 60-2, Santiago, Chile

About Prolangh

Ningbo Prolangh Hardware Co., Ltd. has been dedicated to hardware manufacturing for over 30 years. As a leading OEM and ODM partner, we focus on enhancing production techniques and innovating products that meet global standards.

We lead five specialized subsidiaries—LKS, BOFORTE, JINTA, LANGXIN, and LANWAY—each focusing on distinct hardware domains including 3 Star Cylinders, window and door systems, traffic locks, industrial locks, and pet doors.

BSI-Certified 3 Star Euro Cylinder (KM 675308)
Patented Design in UK & Europe
Customization: Color, Size, Packaging
Prolangh Factory Office

Our Product Range

High-quality, innovative hardware solutions for residential, commercial, and industrial applications.

3 Star Euro Cylinder

3 Star Euro Cylinder

BSI-certified (KM 675308), TS007 3-Star rated. Patented design in UK & Europe. Suitable for PVCu, timber, and composite doors.

  • • BS EN 1303:2015 Compliant
  • • Sizes: 70mm to 130mm
  • • Custom color options
Window Hardware

Window Hardware

Durable and smooth-operating mechanisms for tilt & turn, casement, and sliding windows.

  • • Corrosion-resistant materials
  • • Multi-point locking systems
  • • OEM/ODM customization
Door Hardware

Door Hardware

Complete systems including handles, hinges, closers, and accessories for interior and exterior doors.

  • • Stainless steel & zinc alloy
  • • Anti-bacterial coatings
  • • ADA-compliant options
Traffic Lock

Traffic Lock

High-traffic door locks designed for schools, hospitals, and commercial buildings.

  • • Heavy-duty construction
  • • Emergency exit compliant
  • • Keyed alike & master key systems
Industrial Lock

Industrial Lock

Robust locking solutions for machinery, control panels, and industrial enclosures.

  • • IP65+ rated protection
  • • Tamper-resistant designs
  • • Custom branding & engraving
Pet Door

Pet Door

Secure, weather-resistant pet doors for homes and kennels with magnetic or microchip activation.

  • • Insulated flaps
  • • Adjustable height
  • • Multi-pet recognition
Custom Hardware Solutions

Custom Hardware Solutions

End-to-end OEM/ODM services from concept to mass production.

  • • Rapid prototyping
  • • Tooling & mold development
  • • Global logistics support
Security Accessories

Security Accessories

Reinforcement plates, door chains, peepholes, and anti-pry kits.

  • • Anti-theft certified
  • • Easy retrofit installation
  • • Bulk packaging options
View All Products

Why Choose Prolangh?

Three decades of innovation, quality, and global partnership.

Certified Quality

BSI Kitemark certified 3 Star Cylinder. Compliant with BS EN 1303:2015 and TS007 standards. Rigorous in-house quality control.

Innovation & Design

Patented cylinder design in UK and Europe. In-house R&D team focused on security and usability improvements.

Global Support

OEM/ODM services with dedicated project management. Export experience to Europe, Americas, and Asia-Pacific.

30+
Years in Business
5
Specialized Subsidiaries
60+
Countries Served
10M+
Units Annually

Frequently Asked Questions

What is a 3 Star Cylinder?

A 3 Star Cylinder meets the highest security standards under TS007, tested for resistance to drilling, picking, and snapping. Prolangh’s cylinder is BSI Kitemark certified (KM 675308).

Do you offer OEM/ODM services?

Yes. We specialize in OEM and ODM manufacturing with full support from design, prototyping, tooling, to mass production and global shipping.

Can I customize the color and size?

Absolutely. Our 3 Star Cylinders are available in sizes from 70mm to 130mm and support custom color finishes to match your brand or door.

Where is Prolangh located?

Our headquarters and manufacturing facility is in Guanjiang Village, Tangxi Town, Yinzhou, Ningbo, China.

How can I contact your sales team?

You can reach IDA, our sales representative, at ida@prolangh.com or via WhatsApp at +86 150 5740 0931.

Get in Touch

Partner with Prolangh for high-quality, secure, and customizable hardware solutions.

Contact Information

Email: ida@prolangh.com

Phone/WhatsApp: +86 150 5740 0931

Address: Guanjiang Village, Tangxi Town, Yinzhou, Ningbo, China

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