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GP3 Film &
Darkroom Tools

Heritage analog film manufacturing since 1958. Premium black & white film and professional darkroom equipment for photographers worldwide.

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About JC Film

Continuing a legacy of excellence in analog photography since 1958.

A Legacy of Analog Excellence

Established in 1958, Shanghai Shenbei was a pioneering state-owned film manufacturer that developed the iconic Shanghai GP3 black and white film. Designed as an affordable, high-quality option for the domestic Chinese market, GP3 quickly captured 40% to 50% of the film market, becoming one of the most classic and trusted film stocks of its era.

Though digitalization brought an end to the original factory’s operations in the early 2000s, the spirit of GP3 lives on. Shanghai Jiancheng Technology Pty Ltd continues the legacy, not only preserving the heritage of GP3 film but also advancing the analog experience through cutting-edge darkroom equipment and partnerships with leading black & white film manufacturers.

Manufacturing Since 1958
Historic GP3 Film Production

Our Mission

To preserve the art of traditional photography by providing high-performance black & white film and precision-engineered darkroom tools. We serve analog enthusiasts, professional photographers, and educators who value the tactile, authentic experience of film.

Our Products

Premium GP3 film formats and professional darkroom developing equipment.

GP3 100 Film 120

GP3 100 Film

ISO 100 | Format: 120

  • • Fine grain structure
  • • High contrast & sharpness
  • • Ideal for portrait & landscape
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GP3 400 Film 120

GP3 400 Film

ISO 400 | Format: 120

  • • Medium speed versatility
  • • Excellent exposure latitude
  • • Great for low light
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GP3 400 Film 220

GP3 400 Film

ISO 400 | Format: 220

  • • Double length roll
  • • Compatible with medium format
  • • Extended shooting time
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GP3 100 Film 30.5M

GP3 100 Film

ISO 100 | Format: 30.5M

  • • Bulk roll for sheet cutting
  • • Economical for high volume
  • • Darkroom processing ready
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GP3 400 Film 30.5M

GP3 400 Film

ISO 400 | Format: 30.5M

  • • High-speed bulk film
  • • Ideal for studio & action
  • • Consistent emulsion
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GP3 400 Film 135-36

GP3 400 Film

ISO 400 | Format: 135-36

  • • 36 exposure roll
  • • Standard 35mm compatibility
  • • Balanced contrast
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GP3 100 Film 135-36

GP3 100 Film

ISO 100 | Format: 135-36

  • • Fine grain 35mm film
  • • High resolution output
  • • Daylight optimized
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B&W Sheet 100 Film 4x5in

B&W Sheet Film

ISO 100 | Size: 4x5 inches

  • • Individual sheet packaging
  • • Ideal for large format
  • • Archival quality
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B&W Sheet 100 Film Nonstandard

B&W Sheet Film

ISO 100 | Nonstandard Sizes

  • • Custom dimensions available
  • • Made-to-order production
  • • For specialty cameras
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4x5 Spiral Reel

4x5 Spiral Reel

For 120 & 135 Film

  • • Precision stainless steel
  • • Dual-format compatibility
  • • Smooth loading design
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Film Developing Tank

Film Developing Tank

Single Reel | Light-Tight

  • • Durable polymer construction
  • • Easy pour spout
  • • Universal lid fit
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Developing Tank 2 Spiral Reel

Developing Tank

2 Spiral Reel | 120/135

  • • High capacity dual reel
  • • Stackable design
  • • Leak-proof seal
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Why Choose GP3 Film?

Craftsmanship, consistency, and heritage in every frame.

Trusted Heritage

With roots dating back to 1958, GP3 film has a proven track record of quality and reliability. We honor that legacy with every roll produced.

High Performance

Engineered for fine grain, excellent tonal range, and consistent development—ideal for both beginners and professionals.

Global Community

Join thousands of analog photographers worldwide who trust GP3 for their creative expression and archival work.

1958
Founded
60+
Years of Legacy
40%
Peak Market Share
15+
Countries Served

Frequently Asked Questions

What is GP3 film?

GP3 is a black and white film originally developed by Shanghai Shenbei in 1958. Known for its affordability and quality, it became one of China’s most popular domestic films. Today, GP3 continues under Shanghai Jiancheng Technology, offering both classic film stocks and modern darkroom tools.

Is GP3 film still being manufactured?

Yes. While the original state-owned factory ceased operations in the early 2000s, the GP3 brand and formulations have been preserved and are currently produced under Shanghai Jiancheng Technology Pty Ltd for global distribution.

What formats are available?

GP3 film is available in multiple formats including 120, 220, 135-36, and bulk 30.5M rolls. Sheet film is offered in 4x5 inches and custom nonstandard sizes upon request.

Do you offer OEM or private label services?

Yes, we welcome OEM and private label partnerships. With decades of manufacturing expertise, we can support custom film production and packaging solutions. Contact us for more details.

Where is GP3 film made?

GP3 film is manufactured in Shanghai, China, maintaining the original heritage and quality standards established in 1958.

Can I buy GP3 film outside of China?

Yes. GP3 film and darkroom equipment are available to customers worldwide through authorized distributors and direct sales via our official channels.

Get in Touch

Reach out for product inquiries, OEM projects, or partnership opportunities.

[email protected]
Room 308, 300 Luban Road, Shanghai, China
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