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Qualifications & Honors

As a nationally recognized high-tech enterprise, our company holds more than 20 patents related to electrostatic desalting technology.
We have also long served CNPC, CNOOC, and Sinopec as a qualified supplier, and have obtained corresponding supplier qualifications.

Our R&D Journey

From China’s first desalter unit to an ongoing R&D journey.

We bring smart concepts to life with intelligent control cabinets and unique desalter solutions, ensuring consistent high-quality output for clients.

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Patent Certificate

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Supplier Certificate

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Patent Certificate

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Patent Certificate

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Supplier Certificate

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Patent Certificate

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Patent Certificate

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Patent Certificate

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Patent Certificate

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Certificate of Conformity

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Business License

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Supplier Certificate

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Certificate of Conformity

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Certificate of Conformity

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Award Certificate

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Certificate of Conformity

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Award Certificate

Management System Certification

ISO Management System Certifications

Certified quality, environmental, and occupational health and safety management systems covering power transformers, box-type transformers, explosion-protected desalter transformers, broadband transformers, submersible oil-pump transformers and related maintenance services.

ISO 9001:2015 Quality Management System certificate
GB/T 19001-2016 / ISO 9001:2015

Quality Management System

Certificate
08924Q51374R0M
Issued
2024-06-03
Valid until
2027-06-02
ISO 14001:2015 Environmental Management System certificate
GB/T 24001-2016 / ISO 14001:2015

Environmental Management System

Certificate
08924E31120R0M
Issued
2024-06-03
Valid until
2027-06-02
ISO 45001:2018 Occupational Health and Safety Management System certificate
GB/T 45001-2020 / ISO 45001:2018

Occupational Health & Safety

Certificate
08924S31083R0M
Issued
2024-06-03
Valid until
2027-06-02
Certification & Intellectual Property

Electrostatic Desalting & Special Transformer Patents

Nineteen utility-model patents granted from 2021 to 2024, covering stepless voltage regulation, explosion protection, cooling, electrode rods, high-voltage sealing, test fixtures and manufacturing.

Utility-model patent certificate ZL 2023 2 3498095.8
ZL 2023 2 3498095.8

Stepless voltage-regulation device for electrostatic-desalting transformers

Utility-model patent certificate ZL 2023 2 2702873.4
ZL 2023 2 2702873.4

Explosion-protected electrostatic-desalting transformer with enhanced mixing performance

Utility-model patent certificate ZL 2023 2 2300908.1
ZL 2023 2 2300908.1

Electrode-rod fixing assembly for electrostatic-desalting transformers

Utility-model patent certificate ZL 2023 2 1669717.6
ZL 2023 2 1669717.6

Heat-dissipation structure for high-voltage explosion-protected electrostatic-desalting transformers

Utility-model patent certificate ZL 2023 2 0516417.8
ZL 2023 2 0516417.8

Cooling structure for explosion-protected electrostatic-desalting transformers

Utility-model patent certificate ZL 2021 2 2884094.1
ZL 2021 2 2884094.1

Transformer with explosion-protected structure

Utility-model patent certificate ZL 2021 2 2884112.6
ZL 2021 2 2884112.6

High-voltage electrostatic-desalting electrode rod with fixing structure

Utility-model patent certificate ZL 2021 2 2902371.7
ZL 2021 2 2902371.7

Fixture for testing electrostatic-desalting explosion-protected metal sealing covers

Utility-model patent certificate ZL 2021 2 2902541.1
ZL 2021 2 2902541.1

Cooling structure for high-voltage electrostatic-desalting explosion-protected transformers

Utility-model patent certificate ZL 2021 2 2902571.2
ZL 2021 2 2902571.2

Stepless voltage-regulation device for electrostatic-desalting transformers

Utility-model patent certificate ZL 2021 2 2919720.6
ZL 2021 2 2919720.6

Heat-dissipation structure for high-voltage electrostatic-desalting explosion-protected transformers

Utility-model patent certificate ZL 2021 2 2919747.5
ZL 2021 2 2919747.5

Stable base structure for high-voltage electrostatic-desalting explosion-protected transformers

Utility-model patent certificate ZL 2021 2 2934354.1
ZL 2021 2 2934354.1

Transformer with noise-reduction function

Utility-model patent certificate ZL 2021 2 2945200.2
ZL 2021 2 2945200.2

Reinforced explosion-protected metal sealing cover for electrostatic desalting

Utility-model patent certificate ZL 2021 2 3014947.2
ZL 2021 2 3014947.2

Cutting and positioning device for high-voltage electrostatic-desalting electrode rods

Utility-model patent certificate ZL 2021 2 3022995.6
ZL 2021 2 3022995.6

Sensing probe for liquid-level detection electrode rods

Utility-model patent certificate ZL 2021 2 3033371.4
ZL 2021 2 3033371.4

Manufacturing and automated sorting equipment

Utility-model patent certificate ZL 2022 2 1482933.5
ZL 2022 2 1482933.5

High-speed oil-injection device for electrostatic desalting

Utility-model patent certificate ZL 2022 2 1482939.2
ZL 2022 2 1482939.2

Pressure-relief valve structure for transformers

The certificates identify Shenyang No.4 Transformer Factory (Co., Ltd.) as patent holder. Current legal status and licensing scope should be confirmed against the official CNIPA register. Product certifications such as IECEx are presented separately and are not included in this patent count.