Market Size and What the Machines Sell
A vending machine sells with no attendant, by coin or by a scanned code. It is one form of new retail and of unmanned retail. The trade in China started in the 1990s and grew quickly after 2016, once mobile payment was ordinary, IoT modules were mature, and labour was more expensive. The range moved past drinks and snacks into fresh food, medicine, blind boxes, coffee, and hot meals.
The link is what makes the operation intelligent. Over 4G/5G or Wi-Fi the machine reports stock, sales, and faults. The platform watches it from afar, plans a restock, and maintains it before it fails, so a walking inspection costs less and the route covers more machines.
Industry research puts China's installed base in 2024 at about 1.89 million machines and the market at about 2.486 billion yuan. Compound growth was 30.3% from 2016 to 2021 and about 26.1% from 2017 to 2022. The fleet is expected to pass 2 million units in 2025, and the market to pass 4 billion yuan in 2027. New first-tier cities hold about 39.15%, first-tier cities about 22.72%, and the Pearl River Delta, the Yangtze River Delta, and the Bohai Rim together nearly 80%. Third-tier cities and below still have room.
The 14th Five-Year Plan for the Development of the Digital Economy calls for digital upgrades of traditional industries. The opinions on expanding and improving consumption encourage unmanned retail. GB/T 30448, General Specification for Vending Machines, and GB/T 36448.1, Vending Machine Systems — Part 1: Vocabulary, cover safety, the payment interface, and data communication.
Core Pain Points
Machines in many buildings: They sit in offices, metro stations, hospitals, and campuses. Restocking and faults used to mean a scheduled visit. One machine can cost several thousand yuan a year to look after by hand, and the bill rises sharply once the fleet is large. Restocking by guess: Without a live stock and sales record, the visit frequency and the mix are set by habit. A lane runs out and sales stop, or goods sit and spoil. Each site and each hour sells differently. A fault found late: A jam, a failed payment, or a warm fridge waits for a complaint or the next visit. There is no warning before the fault, so the response is slow and the day's takings drop.
Where IoT Is Used
The link and the watch: A 4G/5G Cat.1 or Cat.4 module talks to the cloud. Temperature, the payment module, lane state, sales, and remaining stock go up as they change. An empty lane, a fault, or a door opened out of turn is pushed to the technician, with a remote diagnosis and a work order. A response that took days takes hours.
What to put back, and what to stock: History plus live stock produces a restock list and a route, so a van does not arrive at a full machine or miss an empty one. A/B tests and a heat map suggest a different mix for each site, which lifts GMV per machine.
Payment: WeChat, Alipay, and the digital yuan are taken on the machine. The transaction goes up and joins the finance system, so reconciliation and the revenue split settle themselves. Some machines add face payment for a purchase with no contact.
Standards and Terms
Most machines sit indoors or under a canopy, and the link has to be stable, quick, and available. Cat.1 is the usual module: the cost is moderate and the power is low. Cat.4 is used when the machine has an interactive screen or plays a video ad. A large fleet wants several APNs and a shared data pool. One machine uses about 50–200 MB a month, depending on how often it sells and whether ads are pushed. A heartbeat every 30–60 seconds is the usual setting. A payment has to finish in under 3 seconds. Cooling is watched to ±0.5°C. A machine has 8–60 lanes, and a lane carries 2–5 kg.
- VMS (Vending Management System): the system that watches the machine, the stock, the sales, and the maintenance in one place.
- SKU (stock keeping unit): one product line.
- Lane: the physical channel a product sits in, tied to a product code.
- GMV (gross merchandise volume): the sales value of one machine or of the fleet.
- Restocking cycle: the time between two visits to fill the machine.
Who Builds It, and Where It Has Been Used
The chain runs from machine makers (Ubox, Fuji Bingshan, and Aucma) through the operating platform (a VMS or other SaaS) and the connectivity layer to the site owner (a property manager, a metro, a hospital). A leading operator can have tens of thousands, sometimes hundreds of thousands, of machines under one brand, and needs a link that holds, a data pool, and a second operator if the first drops.
One chain put 8,000 drink and snack machines online with 4G Cat.1 across East China. The VMS watches them and plans the restock. A fault that took 2 days on average is answered in 4 hours, and the cost of looking after one machine fell about 35%. Machines in one metro concourse added face payment, and daily transactions rose 18%.
Where the Market Is Heading
The range is widening from drinks and snacks into fresh food, coffee, medicine, and daily goods. Third-tier cities, residential compounds, and factories are taking more machines. AI vision is being used on grab-and-go cabinets. The same spot is being shared with a charger or a parcel locker, so the location earns more than one fee.
Summary
A vending machine is one of the main forms of new retail. The link turns a walking inspection into remote maintenance, and a restock based on habit into one based on the sales. A fleet only scales if that connection holds.
SimtoLink supplies 4G/5G IoT SIM cards and communication modules for these machines, with a switch between operators and a shared data pool, so a machine in a lobby stays online and the operator can run it from the numbers.