I. Technology Trends: From “No Leak” to “Precision & Intelligence”

1. Continuous Breakthroughs in Detection Accuracy – Approaching the Limits of Micro‑Leaks

The most striking technological trend in the industry is the leap in detection accuracy to higher orders of magnitude. In 2026, leading equipment already achieves high‑precision micro‑leak detection at the Pascal (Pa) or even milliPascal (mPa) level. The leak rate resolution of some high‑end helium mass spectrometer leak detectors has dropped to 10⁻⁶ Pa·m³/s and is evolving toward 10⁻⁷ Pa·m³/s. This technological breakthrough is mainly driven by emerging high‑tech fields such as hydrogen storage tanks, semiconductor manufacturing, and solid‑state batteries – applications with much stricter “zero leakage” requirements than traditional manufacturing, where even a tiny leak can directly cause product failure or safety accidents.

In terms of specific technical paths, the industry features a coexistence of multiple methods: differential pressure, direct pressure, flow, and helium mass spectrometry each have their applicable scenarios. High‑end detection is gradually shifting to more sensitive technologies such as helium mass spectrometry and laser absorption spectroscopy. At the same time, multi‑channel parallel testing technology is maturing. Integrated fully automated leak testing workstations on power battery Pack production lines can already test more than 300 battery modules per hour per line.

2. Intelligent Integration: From Standalone Equipment to “Hardware + Software + Service” Platforms

In 2026, testing equipment is no longer an isolated instrument but a key data node within the intelligent manufacturing system. Intelligent equipment with cloud data upload and remote diagnostic maintenance has become the industry standard. The ability to connect with Industrial Internet and MES systems is becoming a core evaluation criterion, and data traceability and automated integration are the mainstream development directions.

At the data level, leading equipment supports retention of more than 10 million historical data records. Paired with barcode scanners and fixture control functions, full traceability of test data is achieved. Equipment manufacturers are accelerating their transformation into comprehensive solution providers offering “hardware + software + service.” Built‑in functions such as SPC quality analysis and real‑time test curve display help customers extract value from test data for process optimization.

3. Flexibility & Customization: Solving the “Non‑Standard Part Testing” Challenge

With manufacturing shifting toward flexible production with multiple varieties and small batch sizes, traditional “one‑size‑fits‑all” solutions are no longer sufficient. In 2026, solution flexibility and customization capability have become core considerations in equipment selection.

At the technical innovation level, the concept of tooling‑less design is emerging. Some companies have developed self‑developed expansion‑type quick seal connectors, combined with 3D scanning and flow channel reconstruction analysis, to achieve adaptive sealing of complex structural workpieces, solving the drawback of traditional solutions that rely on expensive custom tooling. At the same time, low‑pressure high‑precision testing technology has been widely applied in the new energy field, accurately identifying micro‑leaks without deforming the thin‑walled structure of battery packs, keeping the test error rate very low. In terms of customization capability, the industry is shifting from selling individual products to a full‑process service model that includes “solution design + equipment supply + commissioning training + after‑sales maintenance,” delivering complete solutions from sealing plugs and auxiliary test tooling to full‑line integration.

II. Market Dynamics: Accelerated Domestic Substitution, Demand Growing Across Multiple Sectors

1. Steady Market Growth

According to industry research data, the global leak tester market revenue reached RMB 1.957 billion in 2025. With an estimated CAGR of 5.14%, the market is expected to reach RMB 2.779 billion by 2032. In the same period, China’s leak tester market size reached RMB 587 million.

From a broader perspective, the global leak detection equipment market is expected to exceed USD 8.5 billion in 2026, with a CAGR of 6.2%. The domestic leak detection equipment market is growing even faster, expanding at a CAGR exceeding 10%. In 2024, China’s leak detector market size reached RMB 4.97 billion, of which testing equipment for new energy vehicle battery packs and electronic control systems accounted for 38%, making it the largest application segment.

2. Competitive Landscape: Domestic Substitution Extends to Mid‑to‑High End

The current market presents a competitive landscape where international brands dominate the high end and domestic brands capture the mid‑end. International manufacturers (such as INFICON, ATEQ, COSMO, etc.) still have technological advantages in ultra‑high sensitivity detection, but they suffer from slow customization response and high operation and maintenance costs. Meanwhile, after years of technological accumulation, domestic companies have broken through core technologies such as low‑pressure high‑precision detection and multi‑channel synchronous testing, breaking the long‑standing monopoly of imported equipment in the mid‑to‑high end market.

Domestic equipment, with its high cost‑performance ratio and rapid customization service, is increasingly becoming the choice of many manufacturing enterprises. According to estimates, the market share of domestic high‑end seal connectors has reached 54%, and Chinese companies are expected to account for over 75% by 2030. At the upstream level, the localization rate of core components continues to rise – from only 32% in 2019, the localization rate of high‑precision sensors in China reached 67% by 2023.

3. Downstream Application Distribution: New Energy Leads

In terms of downstream application distribution, new energy has become the largest application area for leak testing, accounting for 43.6%, with battery packs, hydrogen systems, and energy storage cabinet sealing verification as the core drivers. A standard passenger vehicle power battery pack requires at least five independent leak testing processes, and a single production line can perform over one million tests per year.

The consumer electronics sector follows closely. The widespread adoption of IP67/IP68 waterproof ratings in products such as TWS earphones, smart watches, and foldable screen phones is driving surging demand for miniaturized, high‑speed testing equipment. A TWS earphone typically requires leak verification at multiple locations, with test cycle times controlled within 3 seconds to match assembly speed.

The medical device field is also important: syringes, infusion bags, respirator masks, and other products must be integrity‑tested using vacuum decay or pressure decay methods, complying with international standards such as FDA 21 CFR Part 11 and USP 1207. In addition, gas appliances, home appliances, precision hydraulics, aerospace, and other fields continue to generate demand for leak testing.

III. Industry Standards & Policy Environment

1. National Standard Updates Driving Industry Upgrades

GB/T 25752-2010 “Differential pressure leak detector” continues to serve as the fundamental industry standard in 2026, specifying requirements for core components and reliability assurance strategies for leak detectors, providing important guidance for the design, production, and selection of differential pressure leak detectors.

Notably, GB/T 12137-2025 “Method for pneumatic leak test of cylinders” will be implemented in 2026, adding high‑precision test indicators and process capability requirements, explicitly requiring that test equipment have a data sampling frequency of no less than 1 kHz. Meanwhile, GB 4793-2024 “Safety technical specification for electrical equipment for measurement, control and laboratory use” will take effect on November 1, 2026, partially replacing the old version GB 4793.1-2007, imposing more comprehensive and stricter safety requirements for electrical equipment used for measurement, control, and laboratory purposes (including testing instruments).

In the new energy field, the leak testing of key components such as battery packs must meet IP67 rating requirements (GB 38031-2020), driving the development of testing technology toward higher precision, intelligence, and online integration.

2. Continued Policy Support

At the policy level, the “14th Five‑Year Plan” for intelligent manufacturing development explicitly calls for increasing the CNC rate of key processes and promoting the penetration of online quality inspection equipment. At the same time, the domestic substitution strategy is accelerating. Government departments encourage the procurement of domestically produced precision instruments, providing a favorable development environment for local companies. In addition, updates to international regulations such as the EU Pressure Equipment Directive (PED), which mandates traceable leak test records for critical pressure‑bearing components, have also promoted the adoption of online testing systems globally.

IV. Industry News & Recent Events

1. 2026 China Refrigeration Expo (Beijing, April 8–10)

The 37th International Exhibition on Refrigeration, Air Conditioning, Heating, Ventilation and Food Freezing Processing (referred to as “China Refrigeration Expo 2026”) was held from April 8 to 10 at the Capital International Convention & Exhibition Center in Beijing. With the theme “Digital & Intelligent Shaping of HVAC,” companies such as GTI exhibited comprehensive testing solutions covering pipeline system leak testing, complete building air tightness assessment, air volume testing, and micro‑differential pressure monitoring.

2. 2026 Chongqing Industrial Testing & Smart Inspection Technology Equipment Expo (October 16–18)

The 2026 Chongqing Industrial Testing & Smart Inspection Technology Equipment Expo will be held from October 16 to 18 at the Chongqing Yuelai International Expo Center. The expo will focus on testing technologies in areas such as smart sensors, non‑destructive testing equipment, optical measuring instruments, quality control systems, environmental monitoring equipment, calibration metrology instruments, industrial software, and the Internet of Things, covering industries such as new energy vehicles, photovoltaic modules, and semiconductor chips. As a local testing technology company in Chongqing, it is recommended to actively participate in this expo to seize the opportunity for face‑to‑face exchanges with manufacturing customers in Southwest China.

3. 2026 13th China (Shanghai) International Fluid Machinery Exhibition (October 21–23)

The 13th China (Shanghai) International Fluid Machinery Exhibition will be held from October 21 to 23 at the National Convention & Exhibition Center (Shanghai Hongqiao). The exhibition area will reach 75,000 square meters, fully showcasing achievements of domestic and international fluid machinery manufacturers in technological and product innovation, as well as enterprise transformation and upgrading. The demand from fluid machinery for valve, fitting, and seal testing is highly relevant to our leak tester business and deserves attention.

V. Industry Outlook

Looking ahead to 2026 and beyond, the leak tester industry is expected to present the following development trends:

• Technology: High precision, intelligence, and flexibility remain the main themes. Detection accuracy will continue to push toward the limits of micro‑leaks, and AI‑assisted interpretation and predictive maintenance will gradually be integrated into testing systems.

• Market: Downstream demand from new energy, energy storage, consumer electronics, medical devices, etc., will remain strong. Testing requirements emerging from solid‑state batteries, hydrogen energy, and other new fields will accelerate. Domestic substitution will advance from the mid‑to‑low end to the high end, presenting greater growth opportunities for local companies with independent R&D capabilities and rapid response.

• Industry structure: Equipment manufacturers will continue their transition into comprehensive “hardware + software + service” solution providers, with one‑stop service and data value extraction becoming new competitive focal points.

• Standards: With the successive implementation of new standards such as GB/T 12137-2025 and GB 4793-2024, industry entry barriers will continue to rise, demanding higher accuracy, data acquisition capabilities, and safety compliance from testing equipment.