Has defective Chinese weaponry been imported into Serbia? PART I  

Serbian officials announced in March this year that Serbia had purchased CM-400 supersonic ballistic missiles with a range of up to 400 kilometers. The announcement sparked concern across the region and in Europe. However, this is not the first weapon system that the Serbian Armed Forces have acquired from Chinese manufacturers. 

The Serbian military is already operating a range of Chinese-made weapons, from combat drones to the FK-3 surface-to-air missile system. 

The CH-92A drones were unveiled in 2020, marking the first procurement of Chinese military equipment to enter operational service with the Serbian Armed Forces. 

At the time, Serbia became the first European country to import Chinese military aviation equipment. 

This was followed by the acquisition of CH-95 combat drones, as well as the FK-3 and HQ-17 air defense systems. 

But how reliable are the Chinese weapons that Serbia continues to procure? 

In April this year, IJ-Reportica.com published an analysis of the experiences of other countries that had imported Chinese weapons under the striking headline: "Defective Chinese Weapons." 

In the global arms market, power is often projected through numbers: export volumes, technological claims, and battlefield narratives. China, now among the world’s top arms exporters, has leveraged this perception by positioning its weapons as cost-effective alternatives to Western systems. However, beneath this narrative lies a growing body of evidence that raises serious concerns about reliability, performance, and long-term operational viability. 

This report shifts the focus from what is promised to what actually performs. It investigates a critical but underexamined dimension of modern warfare: failure rates of exported weapons systems. From malfunctioning fighter jets and grounded drone fleets to ineffective missile systems and “blind” radar networks, Chinese-origin military hardware has repeatedly demonstrated patterns of underperformance across multiple countries, including Pakistan, Bangladesh, and Iran. 

The countries with the maximum percentages of weapon exports   

Through verified data, incident records, and defence analyses, this study uncovers the scale and frequency of these failures, mapping how Chinese systems have performed in real-world conditions, often outside combat, during routine operations, training exercises, or live conflict scenarios. More importantly, it places these findings in a global context by comparing China’s performance with that of leading arms exporters such as the United States, France, and Russia. 

The contrast is striking. While Western systems maintain relatively low failure rates supported by mature maintenance ecosystems, Chinese exports show significantly higher rates of technical faults, operational breakdowns, and sustainment challenges. This report quantifies those gaps, offering a comparative assessment of reliability across major exporting nations. 

At its core, this investigation challenges the illusion of deterrence built on affordability. It reveals a harsher reality: in modern warfare, the true cost of a weapon is not its purchase price, but its ability to function when it matters most. 

In an era of expanding militarization and record-breaking defence budgets, understanding how and why weapons fail is as important as knowing who sells them-and to whom. 

Chinese Defence Exports 

China accounted for 5.9% of global arms exports in 2020–2024, making it the fourth-largest arms exporter globally. Chinese arms exports focus primarily on combat aircraft, armed drones (UAVs), surface-to-air missile systems, naval vessels, armoured vehicles, artillery, and guided missiles. Unlike most Western suppliers, China has become a major exporter of armed unmanned aerial systems, often filling gaps where US or European suppliers impose restrictions. 

China’s arms industry is dominated by large state-owned defence conglomerates, including Aviation Industry Corporation of China (AVIC) (combat aircraft and UAVs), China North Industries Group (NORINCO) (armoured vehicles, artillery, and missiles), China Aerospace Science and Industry Corporation (CASIC) and China Aerospace Science and Technology Corporation (CASC) (missiles and air defence systems), and China State Shipbuilding Corporation (CSSC) (major warships and submarines). These entities operate under close state control and align exports with China’s broader strategic and diplomatic objectives.  

Global Share and Export Trends 

China’s share of global arms exports in 2020–2024 was slightly lower than in 2015–2019, despite Beijing’s stated ambition to expand its role in global arms markets. While China has invested heavily in modernizing its defence industry, many of the world’s largest arms importers continue to avoid Chinese major weapons systems, largely for political, interoperability, and trust-related reasons. Concerns over strategic dependence, sanctions exposure, technology reliability, and compatibility with NATO-standard systems have limited China’s penetration into high-end Western-aligned markets.  

China delivered major arms to 44 states in 2020–2024. However, exports were extremely concentrated, with 63% of total Chinese arms exports going to a single country-Pakistan. 

Documented Defective Chinese Weapons 

The earlier report, “The Defective Chinese Equipment & Weapons” by IJ-Reportika, documented multiple cases of operational failures, maintenance breakdowns, and after-sales support deficiencies associated with Chinese-exported military systems across several recipient states. Drawing on publicly available records and field-level reports, it highlighted how a range of platforms, including naval vessels, aircraft, drones, and armored systems—have, in multiple instances, underperformed in real operational environments, raising broader questions about reliability and sustainment. 

Building on those findings, Part 2 of this investigation expands the scope beyond individual case studies to examine systemic patterns across China’s defense export portfolio. Rather than isolated incidents, the focus here is on recurring themes emerging across multiple regions and platforms, including performance inconsistencies, logistical constraints, and limited long-term technical support frameworks. 

Global Patterns of Failure and Key Systemic Issues 

Across multiple recipient states and diverse operational environments, a consistent set of recurring issues emerges from Chinese-origin defence platforms. While individual cases vary in scale and context, the failures documented in this investigation point toward broader structural challenges affecting performance, sustainment, and lifecycle reliability of exported systems. 

1. Recurring Technical Reliability Failures

A significant number of platforms across air, land, and naval domains have reported early-life technical faults, including engine malfunctions, avionics instability, sensor breakdowns, and fire-control system errors. These issues often appear shortly after induction, suggesting challenges in quality assurance, system integration, or adaptation to diverse climatic and operational conditions. 

2. Maintenance Intensity and Low Operational Readiness

Many systems require high-frequency maintenance cycles, resulting in reduced availability rates. Aircraft, drones, and naval vessels in particular have been reported to spend extended periods grounded or docked due to recurring technical faults and limited spare-part ecosystems. 

3. Spare Parts and After-Sales Support Gaps

A recurring concern across multiple countries is the delayed or inconsistent supply of spare parts, software updates, and technical assistance. In several documented cases, recipient states have reported extended downtime due to dependency on Chinese manufacturers for even routine maintenance components. 

4. Limited Combat and Stress-Environment Performance

Several systems demonstrate performance degradation under high-intensity operational conditions, including electronic warfare environments, extreme weather, or sustained combat stress. Reported issues include radar disruption, missile guidance inconsistency, and UAV vulnerability to jamming. 

5. Sensor, Radar, and Electronic Warfare Vulnerabilities

Across multiple platforms, radar and sensor systems have shown susceptibility to interference, reduced detection accuracy, and inconsistent tracking performance. These weaknesses are particularly evident in air defence and naval surveillance systems. 

6. Integration and Compatibility Constraints

Export variants often require significant adaptation to integrate with non-Chinese command-and-control systems, Western-origin components, or legacy platforms. This has resulted in configuration mismatches and reduced system efficiency in joint operational environments. 

7. Lifecycle Sustainability Concerns

Beyond initial procurement, long-term sustainability remains a persistent challenge. High dependency on original manufacturers for upgrades, software patches, and proprietary components has constrained indigenous maintenance capabilities in several recipient countries.