• Date of Event: July 14, 2026
• Location: Guoxin Machinery Testing Workshop
• Equipment Tested: Industrial Continuous Microwave Drying & Heating Machine
• Materials Tested: Colored Shrimp Chips, Dried Yellow Croaker (Small Fish), and Packaged Boxed Meals (Spaghetti)

Introduction: Meeting the Diverse Needs of Modern Food Processing

On July 14, 2026, Guoxin Group’s engineering team conducted a comprehensive workshop machine trial of our advanced Industrial Microwave Drying and Heating Machine.

Unlike traditional hot-air convective dryers that are limited to single-category dehydration, modern food factories demand high-efficiency systems capable of shifting between diverse processing workflows. To demonstrate the thermodynamic adaptability of Guoxin’s microwave technology, this trial evaluated three distinct food categories with completely different thermal requirements: rapid snack puffing (shrimp chips), low-temperature seafood drying (yellow croaker), and instant ready-meal reheating/pasteurization (packaged spaghetti).

Phase 1: Rapid Puffing of Colored Shrimp Chips (Snack Processing)

• Objective: Achieve instant, uniform puffing of raw starch-based shrimp chips without oil frying.
• The Process: Raw, colorful shrimp discs were metered onto the food-grade Teflon conveyor belt and passed through the microwave chamber.
• The Result: Within seconds of exposure to electromagnetic molecular agitation, the moisture inside the starch matrix vaporized instantaneously. This generated rapid internal pressure, causing the chips to puff beautifully into light, crispy, and oil-free snacks. The continuous discharge showed zero scorched edges and 100% uniform expansion.

Phase 2: Dehydration of Dried Yellow Croaker (Seafood Processing)

• Objective: Remove deep-bound cellular moisture from salted fish while preserving delicate proteins, natural color, and locking in nutrition.
• The Process: Pre-salted small yellow croakers were aligned on the conveyor. Traditional hot air drying of fish often takes hours and can result in lipid oxidation (yellowing) and uneven drying.
• The Result: The microwave energy directly penetrated the fish tissue, heated the core water molecules simultaneously, and evacuated the moisture in a fraction of the time required by convective tunnels. The finished dried yellow croakers retained their structural integrity, perfect silvery-gold color, and premium texture.

Phase 3: Fast Reheating & Pasteurization of Boxed Meals (Ready-to-Eat Spaghetti)

• Objective: Heat sealed prep-meals to safe core consumption temperatures while keeping the sauce texture and pasta elasticity intact.
• The Process: Pre-packaged, sealed plastic trays of Italian spaghetti (Bolognese and Carbonara) were placed on the belt.
• The Result: The microwave system achieved rapid, volumetric heating, bringing the core temperature of the dense pasta and viscous sauce to over 75°C in a highly compressed time window. Crucially, the microwave thermal effect doubled as an inline pasteurization step, eliminating potential foodborne pathogens to extend shelf life. During the live workshop tasting, our team confirmed that the noodles retained their perfect al dente chewiness, and the sauce did not separate or dry out.

Technical Engineering Highlights Demonstrated in the Trial

1. Smart PLC Precision Control: The integrated touchscreen console allowed engineers to modulate microwave power density and conveyor belt speed in real time, making the transition from snack puffing (high energy, short duration) to ready-meal reheating seamless.

2. Volumetric & Anti-Cold Spot Heating: Unlike consumer microwaves that suffer from uneven heating, Guoxin’s industrial-grade multi-port microwave suppression system ensures complete field uniformity across the entire width of the conveyor belt.

3. 100% Oil-Free & Eco-Friendly: The trial proved that snack factories can eliminate commercial frying lines for specific products, reducing oil costs and delivering healthier, low-fat consumer alternatives.

Conclusion: Tailored Food Engineering Solutions by Guoxin

This successful multi-material trial highlights why Guoxin Group is a global leader in B2B thermal engineering. Whether you are looking to scale up a snack production line, automate seafood preservation, or optimize a central kitchen’s ready-meal pasteurization line, our industrial microwave systems deliver unmatched efficiency and product quality.