Why We Are Different?

Our commitment to client satisfaction has helped us gain recognition as a dependable partner in the testing instrument industry.

Industry Expertise

Over a decade of experience in designing and manufacturing advanced testing instruments.

High-Quality Products

Strict adherence to international standards ensures durable, accurate, and reliable performance.

Innovative Solutions

Continuous research and development to meet evolving industry requirements.

Global Reach

Proven exporter with a strong presence in international markets.

Most Popular Products

Our focus on research and innovation allows us to continuously upgrade our technology and expand our product portfolio.

CRA160ELSi Protection Relay Test Set

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CRA650L Protection Relay Test Set

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CRA600LSi Protection Relay Test Set

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CRA650LSi Protection Relay Test Set

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CRA650Hi Protection Relay Test Set

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CRA600Si Protection Relay Test Set

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CRA160Si-A Protection Relay Test Set

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CRX200S Handheld Optical Digital Test Set

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About us

CROXS Inxtruments Co., Ltd.

Our Handheld Optical Digital Test Set and Protection Relay Test Set are engineered for accuracy, crafted for reliability, and trusted by industries to ensure safe and efficient testing operations.

Founded in 2014 in Changsha High-tech Development Zone, CROXS Instrument Co., Ltd. is a national high-tech enterprise dedicated to power system testing and smart grid solutions. The company has been recognized as a National High-Tech Enterprise, National Technology-Based SME, and Specialized, Refined, Unique, and Innovative SME in Hunan Province. With strong R&D capabilities and multiple national patents, CROXS delivers reliable and advanced testing instruments that support the safe, stable, and efficient operation of modern power systems.

Driving Innovation and Progress

Innovation is at the core of everything we do. We continuously invest in research, development, and technology upgrades to enhance our product performance and expand our offerings. Our experienced team of engineers and professionals works with a vision to meet evolving industry requirements while maintaining our values of trust, integrity, and excellence. With a focus on growth and advancement, we are committed to being a preferred global partner for testing solutions.