Intelligent durian sorting line
Smart Manufacturing · Turnkey Solutions

Intelligent Durian Sorting
& Weight-Grading Line

HS390 NIR non-destructive inspection + AI vision + smart weighing + patented weight-batching packing — a full-chain digital system covering “inspection, sorting, coding, traceability and data”, so that every durian can be trusted from tree to table.

2000 fruits/hour (high-speed version) inspection capacity ≥90% quality-grading accuracy ±0.001 kg sorting precision <1.5 s per-fruit inspection
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A fast-growing market, yet trapped in a lagging supply chain.

1 million t+
China's annual consumption
The world's fastest-growing tropical fruit
8-15%
Traditional post-harvest loss rate
Hundreds of billions in losses every year
10%
Manual underripe/dead-flesh rate
Brand reputation keeps eroding
48h
Opening window for 90%-ripe fruit
A very short golden sales period
01 · Industry Pain Points

Manual, experience-based grading,
is eroding profits across five dimensions.

Traditional sorting that relies on visual inspection and tapping can hardly keep pace with China's explosive demand for quality. The problem is not on the demand side, but in every link on the supply side.

PAIN 01

Hard to Inspect Quality

Tapping fruit by hand depends on experience, and the miss rate for underripe, dead-flesh and hard immature fruit remains high, causing frequent customer complaints and seriously damaging brand reputation and consumer trust.

PAIN 02

Low Sorting Efficiency

Manual weighing and grading is slow and inconsistent; in peak season, capacity cannot match concentrated arrivals, leading to stock buildup, higher losses and missed sales windows.

PAIN 03

Missing Traceability

The data chain breaks between cultivation, harvest and terminal sales. When quality issues arise, the responsible link cannot be pinpointed and root causes are hard to trace.

PAIN 04

Weak After-Sales Control

Without digital evidence to back claims, fraudulent after-sales cases and malicious compensation demands are hard to distinguish, payouts stay high and no quality-improvement loop can be closed.

PAIN 05

No Basis for Management

Production data lack quantified metrics; worker efficiency, equipment status and capacity bottlenecks cannot be monitored in real time, so management decisions rest on experience alone.

Core Value

Full-Chain Digital System

We build a full-chain digital system covering “inspection, sorting, coding, traceability, data and operations”, turning industry data into a core asset that accumulates and can be reused.

02 · Overall Line Architecture

A 14-50 m line,
with four functional zones working as a closed loop.

The line runs 14-50 m (customized to capacity) in a dual-sided workstation + dual-level conveyor layout, with an integrated empty-tray return system. It is divided into four zones: infeed and inspection, sorting and weight batching, coding and casing, and re-inspection and outbound.

Sensing & Inspection LayerFour-dimensional sensing system

Inside + outside + weight + identity, captured precisely in milliseconds.

We deploy NIR spectrometers (internal quality), industrial smart cameras (external appearance), high-precision dynamic checkweighers (weight grading) and QR code recognition (identity tracking) to capture every quality dimension of a durian with millisecond precision.

Execution & Marking LayerPrecise actuation and coding

A PLC control core that drives precise mechanical action.

With a Mitsubishi PLC as the central control hub, stepper motors and pneumatic components execute flap sorting with precision; high-power laser coding equipment and industrial label printers apply product information and unique identities at high speed.

Smart Computing LayerReal-time processing and alerts

GPU-accelerated computing for a transparent production process.

High-performance servers and GPU accelerators process massive line data in real time; combined with full-coverage industrial monitoring and a smart sensor network, they keep production transparent and traceable, with real-time alerts and intelligent decisions when anomalies occur.

2000/h (high-speed version)
Sorting efficiency · dynamic adaptive adjustment
±0.001kg
Grading accuracy · high-precision sensors
≥90%
Quality accuracy · dual AI vision + NIR verification
7×24h
Continuous operation · industrial-grade reliability
Durian orchard
Core Line Workflow

Infeed and inspection → sorting and weight batching → coding and casing → re-inspection and outbound: a closed loop across four zones.

Dual quality checks with internal spectroscopy and external AI vision, dynamically self-adjusting to handle every durian efficiently.

Data Closed-Loop System

A seven-layer data closed loop,
delivering “collectable, traceable and analyzable”.

Sensing & Collection

Real-time multi-dimensional collection through spectroscopy, weight, vision recognition and QR codes, with full coverage of source data.

PLC Control Layer

Real-time logic processing on collected data precisely drives flap sorting and marking triggers, ensuring automation and accuracy.

Coding & Marking Layer

Laser coding gives every durian a unique ID, permanently binding origin, harvest date and quality grade.

Outbound Verification Layer

Smart code readers scan and verify automatically, confirming grade and destination so that logistics information stays accurate and traceable.

Data Platform Layer

Aggregates and cleans full-chain data into structured storage, and applies big-data modeling to uncover patterns in production and consumption.

Application & Output Layer

Produces visual monitoring dashboards and quality traceability queries, and provides brands with after-sales anti-counterfeiting and marketing support.

Core Value of the Closed Loop

Reverse Optimization: Building a Positive Growth Cycle

Analytics from the data platform feed back to growers and the line, guiding cultivation techniques, supply-chain product selection and production parameter tuning — a complete loop from data to value.

03 · Core Technologies

Three core technology modules that
define the industry standard for smart durian manufacturing.

Core 1 · Internal Spectroscopy · Seeing Through the Flesh

The HS390 NIR spectrometer
non-destructively “sees through” flesh quality.

NIR light penetrates the rind to perform non-destructive screening across all dimensions — ripeness, sugar content, underripe flesh, dead flesh, hard immature flesh and flesh ratio. Each fruit takes <1.5 s, contact-free with no damage to the rind, at ≥90% accuracy — far beyond manual, experience-based judgment.

900~1700nm
Spectral response range
<1.5 s
Per-fruit inspection speed
≥90%
Quality grading accuracy
5 key indicators Full-dimension coverage Ripeness Sugar content Underripe flesh Dead flesh Hard immature flesh

Equipped with automatic constant-temperature and calibration systems, it adapts to the demanding line environment and delivers 24-hour uninterrupted, stable operation.

NIR inspection equipment
Core 2 · AI Vision + Smart Weighing

Gram-level precision, millisecond response.
Three-dimensional grading, inside and out.

High-precision dynamic weighing

±0.001 kg gram-level precision

A high-precision dynamic weighing module (±0.001 kg) with 32 pneumatic flap units (8 columns × 4 rows), controlled by a Mitsubishi PLC, responds with ≤300 ms latency.

AI Image Algorithms

Smart recognition with industrial cameras

Industrial cameras plus AI image algorithms identify fruit shape, size, surface defects, cracking, insect holes and color, analyzed together with internal quality data.

±0.001kg
Dynamic weighing accuracy across the full range
≤300ms
Flap response latency
6+6 grades
Freely configurable combinations, with no overlapping ranges
32 units
Pneumatic flap matrix (8 columns × 4 rows)
Smart Grading Logic

Load balancing + exception diversion

The system automatically balances flap loads to reduce mechanical wear; abnormal fruit is identified and diverted to dedicated lanes to keep sorting purity. Grades are freely configurable as 6+6 with no overlapping ranges. Internal quality + appearance + weight combine into three-dimensional grading.

Core 3 · Laser Coding + Patented Weight-Batching Packing

One-item-one-code anti-counterfeiting,
with patented weight batching for precise packing.

Laser Coding · Physical Anti-Counterfeiting

Laser-engraved unique traceability code

A high-power laser coding system provides physical anti-counterfeiting with no adhesive labels, ruling out imitation and tampering. Each engraved code carries origin, harvest batch, quality grade and a unique ID. First-scan activation plus geospatial and time verification intelligently flag malicious claims, cutting fraudulent after-sales claims by 90%.

Patented Weight Batching · Invention Patent Applied For

Global combinatorial optimization algorithm

Powered by tray identity tracking + a global combinatorial optimization algorithm (invention patent applied for), it automatically assembles fruit to satisfy three constraints — total weight, fruit count and per-fruit weight — with a case weight error of ≤±50 g. It supports mixed packing for multi-specification, multi-channel orders.

≤±50g
Case weight error
-90%
Reduction in fraudulent after-sales claims
1 patent
Invention patent applied for the weight-batching algorithm
Case-level drill-down
The case code links every single-fruit code
Case Traceability · Drill-Down Provenance

The case code is automatically linked to every single-fruit code inside.

Traceability drills down from case to individual fruit: inventory can be managed by case, and at any stage you can drill into the full quality record of a single fruit, so logistics, sales and after-sales information flow seamlessly end to end.

Laser coding
04 · Academic Validation

Not a claim of our own,
but validation by the international academic community.

Our NIR non-destructive inspection technology is backed by joint research from leading Thai universities, achieving 100% ripeness-classification accuracy on the validation set.

Academic Research · Third-Party Endorsement

Improving non-destructive ripeness classification models for durian fruit using near-infrared spectroscopy

Joint research by Khon Kaen University, King Mongkut's University of Technology Thonburi and Kasetsart University in Thailand, published in the international journal Artificial Intelligence in Agriculture (2023, updated March 2026). It uses short-wave near-infrared spectroscopy (SWNIR, 450-1000 nm) with the LDA algorithm.

160 Monthong samples · 75% training set + 25% validation set · 5-fold cross-validation

100%
Classification accuracy on the validation set
SWNIR+LDA
Best algorithm combination
Research Innovation

Truly Non-Destructive Inspection

It overcomes the need to slice and destroy fruit in conventional methods, testing whole durians directly and fully preserving their commercial value. By fusing spectra from both rind and stem, it breaks through the limits of a single data source.

Key Findings

Multi-Part Fusion Improves Performance

Rind spectra alone reached 93.77% accuracy, rising to 100% when stem spectra were combined. Stem spectra effectively supplement the rind's feature dimensions and markedly improve model robustness.

Industry Value

Fast In-Line Screening

It can be applied to in-line, “one-fruit-one-test” screening of export durian, precisely controlling ripeness and reducing quality disputes. Low cost and high efficiency give it strong potential for large-scale deployment.

This study provides solid academic grounding and technical feasibility validation for the scientific principles of the NIR inspection module in Huishi's intelligent sorting line.

05 · Digital Management Platform

A transparent factory,
starting with a single dashboard.

We connect isolated production data islands and let data drive decisions, achieving a transparent production process, refined management and optimal efficiency.

Real-time line visualization dashboard
Real-time Line Visualization Dashboard

A panoramic view of output, yield ratio and equipment status makes production dynamics clear at a glance.

Real-time monitoring of output by workstation, OEE metrics and anomaly alarms; the dark industrial-style interface is easy on the eyes and suited to long hours of workshop monitoring.

Work Standards

Full Video Coverage

Industrial video monitoring keeps key processes standardized and compliant, and quality issues can be traced back to specific operators.

Performance Management

Fair Pay-for-Performance Incentives

Automatically tracks output, working hours and efficiency for individuals and teams, and intelligently generates multi-dimensional performance assessment data.

Smart Operations

From Shop Floor to Mobile Management

Remote diagnostics and parameter tuning let you follow equipment status from anywhere on mobile — a leap-forward upgrade.

06 · Quality Traceability & Anti-Counterfeiting After-Sales

Scan to check,
building a tamper-proof loop of trust.

It covers every node from origin, harvest, transport, inspection, sorting and packing to logistics and the end consumer, delivering transparent management from field to table, and builds a smart after-sales system of “anti-counterfeiting verification, risk screening, online closed loop and data feedback”.

Traceable at Source · Origin

Orchard records on file

Orchard profiles, harvest dates and batches are kept on file and linked to quarantine certificates, ensuring that fruit is natural and safe from the very source.

Strict Standards · Factory

Inspection reports retained

Spectral inspection reports and weight-grade records are retained, with processing personnel and time clearly logged, keeping every process controllable.

End-to-End Monitoring · Distribution

Temperature, humidity and routes

Warehouse temperature and humidity are monitored in real time, with full tracking of logistics routes and distributor information, ensuring freshness on arrival.

Transparent Consumption · Consumer

Scan for the full-chain record

Consumers scan to view the full-chain record and submit after-sales requests in one tap; transparent information builds deep brand trust.

Smart Risk Control · After-Sales

Precise Detection of Malicious Claims

A big-data risk model based on scan frequency, purchase time, product destination and geographic location precisely identifies and blocks fraudulent after-sales claims.

Data Feedback · Closed Loop

Continuous Optimization and Upgrades

Complaint types and root causes are analyzed, and the data flows back to empower supply-chain optimization, continuously iterating product quality and service.

07 · Industry-Wide Big Data Center

With data as the core engine,
we hold the say in the industry chain.

We aggregate full-dimension data on durian production regions, varieties, quality, distribution and consumption across China to build the country's largest durian industry database, making the leap from “experience-based judgment” to “data-driven decisions”.

Production Region Data

Source supply capacity

Covers core production regions in each country, monitoring orchard output, ripening cycles and origin traceability in real time.

Quality Data

Standardized evaluation system

Collects inspection data such as sugar content, ripeness and flesh ratio to establish a standardized quality evaluation and scoring system.

Distribution Data

Market demand insights

Tracks omnichannel sales, price fluctuations and regional consumer preferences to reveal how market demand is shifting.

Empowerment 01

Optimize Supply-Chain Costs

Guides procurement planning with production-region and demand data, precisely matching supply and demand and reducing inventory buildup and logistics losses.

Empowerment 02

Advance Standardization

Establishes scientific quality grading and pricing standards, bringing order to the market and improving distribution efficiency and premium pricing power.

Empowerment 03

Support Business Decisions

Big data forecasts market price trends and supply-demand shifts, providing data support for pricing strategy and inventory management.

08 · Investment Returns Analysis

Four core benefits,
with payback in about 1-3 months.

Integrated projections show significant economic benefits, with a very high input-output ratio and rapid realization capability.

-80%

Sorting Labor Slashed

Sorting labor cut by 80%, greatly reducing dependence on manual work, saving over CNY 3 million a year.

15→5%

Quality Losses Sharply Reduced

The miss rate for underripe and dead flesh drops from 15% to 5%, controlling quality at the source and cutting losses by about CNY 3 million a year.

-90%

Lower After-Sales Losses

Full-process data traceability cuts fraudulent after-sales claims by 90%, recovering about CNY 3 million a year.

200→50g

Weight-Batching Losses Sharply Reduced

Manual packing overfills each case by 200 g+; the line controls it to within 50 g, saving over CNY 5 million a year.

Payback Period
About 1-3 months

Integrated projections show significant economic benefits, with a very high input-output ratio and rapid realization capability.

09 · Implementation Plan & Service Assurance

Standardized five-stage delivery,
with full-lifecycle service support.

01
1-2 weeks

Requirements Confirmation

On-site environment survey, in-depth refinement of business requirements, and finalization of the technical implementation plan and project schedule.

02
4-6 weeks

Manufacturing

Custom production of hardware and development of software functions, with in-house simulation testing and quality inspection completed in parallel.

03
1-2 weeks

On-Site Implementation

On-site equipment installation and system integration, plus professional skills training for operators and the O&M team.

04
1 week

Trial Run + Long-Term Operation

Full-process trial production and validation, followed by acceptance and handover; long-term O&M support and system iterations are provided.

Quality Warranty

1-Year Free Warranty

The complete equipment comes with a 1-year free warranty, and extended warranty service is available for core precision components.

Rapid Response

7×24 online

Engineers respond on site within 24 hours of a fault report, resolving issues quickly.

Software Upgrades

Lifetime Free Iterations

System software receives lifetime free iterative upgrades, continuously adapting to business development needs.

Proactive Inspections

Preventive Maintenance

Professional engineers visit regularly for inspections and preventive maintenance, minimizing hidden failure risks.

Reshaping the durian industry chain
with digital technology.

By integrating AI vision, IoT and big data, we create a replicable and scalable model for digital transformation of the durian industry, leading the industry from traditional models to smart, efficient operations.