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Advanced Retort Sterilization
Solutions for Global Food Safety

Zhucheng Zhonggong Machinery Co., Ltd. – Trusted manufacturer since 2002, delivering high-efficiency, fully automatic retort systems for food, pet food, beverages, and more.

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Pure Physical Sterilization

No chemical additives – safe, reliable, and compliant with global food safety standards.

Global Reach

Over 1800+ retort systems installed worldwide, serving clients in 50+ countries.

Full Automation

Smart control systems, PLC integration, and remote monitoring for seamless operation.

Zongon Retort Factory

About Zhonggong Machinery

Established in 2002, Zhucheng Zhonggong Machinery Co., Ltd. is a leading manufacturer specializing in fully automatic retort sterilization systems, cooking kettles, and modified atmosphere packaging machinery.

Our mission is to deliver innovative, energy-efficient, and reliable food processing solutions that meet the evolving needs of the global food industry. With over two decades of experience, we have built a reputation for quality, precision, and customer-focused service.

  • ISO-certified manufacturing processes
  • R&D-driven innovation in retort technology
  • Custom engineering for diverse packaging types
  • Global installation and after-sales support

Our Product Range

From laboratory-scale units to industrial rotary retorts, we offer a comprehensive portfolio of sterilization and cooking equipment designed for efficiency, safety, and scalability.

Water Spray Retort

Water Spray Retort

Ideal for stand-up pouches, bottles, and flexible packaging. Gentle temperature control ensures product integrity.

  • • Even heat distribution via spray nozzles
  • • Suitable for glass, PE/PP bottles
  • • PLC-controlled automation
Water Immersion Retort

Water Immersion Retort

Perfect for large-bulk packaging and cans. Full water submersion ensures rapid, uniform sterilization.

  • • Pure physical sterilization
  • • High-capacity models available
  • • Energy-efficient heating system
Laboratory Retort

Small Laboratory Retort

Designed for R&D and pilot-scale production. Compact, precise, and easy to operate.

  • • Ideal for food labs and startups
  • • Temperature accuracy ±0.5°C
  • • Touchscreen control panel
Rotary Retort

Automatic Rotary Retort

Enhances heat transfer and reduces processing time. Ideal for viscous products like sauces and porridge.

  • • Tugboat or mechanical seal options
  • • 360° rotation for uniform heating
  • • High concentricity and compression
Spices Steam Retort

Spices Steam Retort

Specialized for heat-sensitive products like spices, herbs, and seasonings.

  • • Steam-only sterilization
  • • Prevents flavor degradation
  • • Compact design for small batches
Steam Air Retort

Steam Air Retort

Combines steam and air for precise pressure and temperature control.

  • • Ideal for rigid containers
  • • Prevents container deformation
  • • Energy-saving mode available

Variable Temperature Puffing Equipment

Innovative system for puffing snacks using differential pressure and temperature control.

  • • Suitable for plant-based snacks
  • • No oil required
  • • High expansion ratio

Electric & Gas Jacketed Kettles

Precision cooking and mixing for sauces, soups, and ready-to-eat meals.

  • • Electric or gas heating options
  • • Planetary stirring mechanism
  • • Easy cleaning and maintenance
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Applications Across Industries

Canned Food

Long shelf-life preservation with full sterilization for tin cans and glass jars.

Meat Products

Safe processing of sausages, hams, and ready-to-eat meats in vacuum bags or trays.

Drinks & Beverages

Sterilization of bottled juices, teas, and functional drinks in PE/PP or glass bottles.

Porridge & Sauces

Uniform heating for viscous products using rotary retorts and planetary kettles.

Leisure Food

Snacks, pickles, and instant meals in stand-up pouches or vacuum-sealed bags.

Pet Food

High-temperature processing for wet pet food in aluminum trays or pouches.

Compatible with All Major Packaging Types

Tin Cans Stand-up Pouch PE/PP Bottle Glass Bottle Vacuumed Bag Tin Foil Tray

Global Case Studies

Ukraine Delivery

Large-scale water spray retorts delivered and installed for a leading canned food producer.

Singapore Expansion

Autoclave sterilizer machine shipped to support growing beverage demand.

Thailand High-Match

Custom rotary retort designed for tropical food processing requirements.

Bubble Tea Sterilization

Specialized system for popping boba and flavored drinks in pouches.

Spices Steam Retort

Gentle sterilization for aromatic spices without flavor loss.

Egg Processing

High-temperature solution for pre-cooked and peeled eggs in brine.

Get in Touch

Have questions about our retort systems? Need a custom solution? Reach out to our team for expert guidance.

zongon@zongon.com
+86-13791672988
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