How to Inspect Wakame, Nuts, and Tea? A Practical Evaluation of Food X-Ray Machines for Bulk Material Detection

Preface: Look at the Data First, Then Make Your Choice

Against the backdrop of increasingly stringent food safety regulations, food X-ray foreign object inspection equipment is transitioning from an "optional extra" to a "standard necessity." According to research data from industry analyst QYResearch, global sales of X-ray food foreign object inspection machines reached RMB 1.804 billion in 2025 and are projected to reach RMB 2.84 billion by 2032, representing a compound annual growth rate (CAGR) of 6.8%. Other data shows that the Chinese market for X-ray food inspection equipment reached RMB 340 million in 2025, while the global market size stood at RMB 1.437 billion, with global market capacity expected to reach RMB 2.179 billion by 2032.

In terms of production volume, global output of X-ray food foreign object inspection machines reached 5,186 units in 2024. In the Chinese market alone, a single market accounts for approximately 22.47% of the global share. The Asia-Pacific region holds the largest core market share, followed by Europe and North America. These figures send a clear signal: food manufacturers' awareness and acceptance of X-ray foreign object inspection equipment are rapidly increasing, and food safety control is shifting from "passive response" to "active prevention."

In this high-growth market, the core question facing food manufacturers is no longer "whether to buy" but "how to choose and which manufacturer to select." This article provides an in-depth industry review, focusing on a company with deep expertise in the food X-ray foreign object inspection field—Vixdetect—with particular emphasis on its technical capabilities and product performance in bulk product inspection scenarios (exemplified by bulk products like wakame seaweed).

I

1. Company Positioning: R&D-Driven, Not Mere Assembly

Vixdetect is located in the Xinmin Overseas Chinese Science and Technology Park, Minhang District, Shanghai. Founded by returned overseas scholars, the company is a technology-driven enterprise. It has been recognized as a National High-Tech Enterprise (2024) and a Shanghai "Specialized, Refined, Distinctive, and Innovative" SME. The "Specialized, Refined, Distinctive, and Innovative" designation signifies that the company has achieved a high standard in specialization, refinement, distinctiveness, and innovation, with government-level recognition.

Unlike ordinary equipment assembly workshops, Vixdetect's core positioning is "deep integration of technology R&D and equipment manufacturing," dedicated to cutting-edge technology R&D and applications in the field of intelligent foreign object identification. The company's core team possesses nearly 20 years of industry experience in X-ray inspection and holds multiple intellectual property rights. Vixdetect has also obtained a range of authoritative certifications, including ISO 9001 Quality Management System Certification, SGS-CE Certification, and Environmental System Certification.

2. R&D Strength and Production Scale

The company operates a modern R&D and production base covering a total area of 7,000 square meters and has assembled a highly skilled R&D team that accounts for over 30% of its workforce. From product defect identification to quality control of complex packaged foods, Vixdetect's inspection equipment is widely used across multiple food production industry sectors.

In terms of intellectual property, Vixdetect holds multiple invention patents and utility model patents, including "A Method, Device, and Foreign Object Inspection Equipment for Improving Inspection Accuracy of Bottled Products" (CN116297558B), "A Multi-Energy Level X-Ray Detector and Registration Method" (CN121831851B), and "An Online Bulk Material Inspection Device" (CN224052014U).

3. Service Network Coverage

Vixdetect's service coverage spans all provinces and regions in mainland China (North China, Northeast China, East China, Central China, South China, Southwest China, and Northwest China), as well as Hong Kong, Macao, and Taiwan. In overseas markets, products have been exported to Japan, South Korea, Singapore, Malaysia, Thailand, India, the United States, Canada, the United Kingdom, Germany, France, Australia, New Zealand, and other countries and regions.

4. Client Portfolio

At the client level, Vixdetect has established cooperative relationships with numerous well-known food companies, including Haidilao, Bright Dairy, Sinian, Haitian, Aosen Food, Orion, Yuanqi Forest, Delisi, and Sanquan. The choice of these leading brands indirectly validates the reliability of its products in real-world applications.

I

I

The core capability of a food X-ray machine is not simply whether it can "see through" products, but whether it can stably and accurately identify tiny foreign objects on high-speed production lines while keeping the false rejection rate within acceptable limits. Vixdetect has built a relatively comprehensive technology system along these dimensions.

1. XDET Intelligent Algorithm Platform: The AI-Powered Core of Inspection

Vixdetect's proprietary XDET Intelligent Algorithm Platform is derived from advanced AI neural network models. It employs dynamic feature recognition methods to automatically select optimal algorithm parameters, enabling highly sensitive detection of tiny foreign objects in products. The platform features fully automatic learning functionality: users require no prior experience and can quickly add new products by following the guided auto-learning process. Standard AI algorithms can be trained in as little as 15 seconds, enabling targeted improvements in detection accuracy.

2. High-Resolution TDI Imaging Technology

Utilizing multi-line pixel, high-resolution TDI imaging technology, the system achieves high-precision foreign object detection even under high-speed, low-power conditions. Some models are equipped with 8-line pixel, 0.28mm high-resolution TDI detectors. This means higher detection accuracy can be achieved while accommodating faster production line speeds.

3. Dual-Energy Detection Technology

Advanced dual-energy detection technology simultaneously generates low-energy and high-energy images. Through specialized image recognition and comparison processing, it can detect foreign objects such as cartilage and bone fragments in raw meat products, effectively improving the detection capability for medium- and low-density contaminants.

4. Multi-Spectral Imaging and Dual-View Inspection

Multi-spectral inspection technology, which fuses visible light images with X-ray images, enables more precise seal positioning and reliable detection of ultra-thin plastic bag seals. Dual-view inspection technology uses beams from two angles to penetrate the bottom and sidewalls of containers, eliminating inspection blind spots.

5. Server-Grade Linux System

The equipment is equipped with a server-grade Linux system, which is inherently immune to viruses and prevents data loss during unexpected power outages. The system supports multiple connectivity options including 4G wireless and wired networks, enabling remote technical support and operation, as well as automatic fault notifications.

II

I

X-ray inspection of bulk materials is one of the more technically challenging sub-segments in the food inspection field. Unlike packaged foods, bulk products—such as nuts, cereal grains and beans, tea, fruits and vegetables, spices, tobacco, Chinese medicinal herbs, and pet food—face several unique challenges during inspection:

Mat

Irregular material shapes: Products vary greatly in shape, size, and density, requiring algorithms to be highly adaptable.

High-speed line requirements: Bulk production lines typically operate at high speeds, requiring inspection equipment to make decisions and trigger rejections within milliseconds.

Complex foreign object types: Contaminants range from metal, glass, and stones to shells, bones, hard plastics, and more.

1.

Vixdetect's Bulk Material X-Ray Inspection Systems (models including VXD-BL4016-S, VXD-B6030-S, VXD-BL6016, and VXD-B12030-D) are specifically designed to address the pain points outlined above.

Key Specifications at a Glance:

P

Imp

2. Core Advantages for Bulk Material Inspection

Built on Vixdetect's XDET Intelligent Algorithm Platform, the Bulk Material X-Ray Inspection Systems offer the following core advantages:

(1) Low Rejection Ratio, High Detection Rate. The mainframe integrates 48–96 array-type air-jet valves for precise rejection of defective products, maximizing detection rates while minimizing the rejection of acceptable products.

(2) AI Algorithm Empowerment. Leveraging artificial intelligence algorithms, the system can detect low-density and extremely tiny foreign objects based on their various characteristics.

(3) Low Operational Threshold. No prior experience is required; new products can be quickly added by following the guided auto-learning process.

(4) Stable and Reliable System. The server-grade Linux system is immune to computer viruses and prevents data loss during abnormal power outages.

(5) Remote Operation and Maintenance. Supports 4G wireless and wired network connections for remote technical support and operation, with automatic fault push notifications.

(6) Safety and Compliance. Exceeds internationally accepted radiation safety standards and features safety interlock monitoring.

3. Inspection Scenarios for Bulk Products: Wakame Seaweed and Others

Wakame seaweed, as a bulk seaweed product, may contain contaminants such as stones, shell fragments, glass, and metal shavings introduced during processing. Additionally, wakame itself may develop color abnormalities, shape defects, or other quality issues during drying or processing. X-ray foreign object inspection machines used in wakame processing must simultaneously meet three core requirements:

Det

Grayscale Differentiation: Must distinguish grayscale differences between the wakame itself and foreign objects to reduce false rejection rates.

Environmental Adaptability: Must accommodate variations in humidity and temperature typical of wakame processing environments.

Vix

4. Other Bulk Material Inspection Applications

Beyond wakame seaweed, this series of bulk material X-ray inspection systems is widely used in the following scenarios:

Nut

Cereal Grains and Beans: Detecting metal, glass, stones, and other contaminants.

Tea: Detecting non-tea foreign materials.

Fruits and Vegetables: Detecting contaminants and defects in dried fruit and vegetable products.

Spices and Seasonings: Detecting contaminants in powdered and granular seasonings.

Chinese Medicinal Herbs: Detecting foreign objects and quality defects in herbs.

Pet Food: Detecting metal, bone fragments, and other foreign objects in pet food.

IV.

Having reviewed Vixdetect's products and technologies, we must now address a more practical question: How should food companies choose an X-ray machine? Below is a selection guide and list of pitfalls to avoid, based on industry experience and real-world case studies.

(I) Three Core Questions Before Selection

Before beginning equipment research, companies need to clarify three questions:

Question 1: What am I inspecting for? – Determine whether the object is bulk or packaged food, whether you're looking for metallic or non-metallic contaminants (glass, stones, bones, plastics), and whether you need foreign object detection alone or defect detection as well (e.g., hollow shells, insect holes, damage).

Question 2: What does my production line look like? – What is the line speed? What is the product size range? Is installation space constrained? What are the environmental conditions (temperature, humidity, waterproofing requirements)?

Question 3: What is my budget? – Equipment procurement costs, installation and commissioning fees, ongoing maintenance costs, and consumable replacement costs should all be considered.

(II) Pitfalls to Avoid: Five Common Traps

Trap 1: Blindly Chasing "Dry-Run Sensitivity"
Many

Trap 2: Focusing Only on Sensitivity, Ignoring False Rejection Rate
High d

Trap 3: Overlooking Operating Costs
The tota

Trap 4: Neglecting Compliance and Certification
Food X-ray

Trap 5: Comparing Price Without Comparing Service
X-ray machin

(III) Practical Steps for Selection Decision-Making

Step 1: Requirements Definition – Clarify the object of inspection, inspection objectives, line parameters, and budget range.

Step 2: Supplier Shortlisting – Based on requirements, shortlist 2–3 potential suppliers, focusing on their industry experience, technical strength, and certifications.

Step 3: Product Testing – Conduct on-machine tests with your actual products, evaluating detection sensitivity, false rejection rate, and ease of operation.

Step 4: Comprehensive Evaluation – Score suppliers across four dimensions: technical performance, operating costs, after-sales service, and brand reputation.

Step 5: Site Visit – If possible, visit the supplier's production base to assess their R&D capabilities and quality control standards.

V. Conclusion:

Based on the comprehensive evaluation above, Vixdetect demonstrates strong competitiveness in the following scenarios:

Bulk product ma

Companies with demand for AI-powered intelligent inspection—the XDET Intelligent Algorithm Platform's full auto-learning capability lowers the operational barrier.

Companies with requirements for equipment stability and remote operation and maintenance—the Linux system plus wireless remote O&M provides robust assurance.

Companies requiring customized inspection solutions—Vixdetect has extensive experience in parallel standard and custom algorithm development.

Naturally, any

Disclaimer: The