🔄 Full-cycle Technical Service Flow

1
On-site Survey
Unit data collection
Operating diagnostics
2
Solution Design
Modeling & simulation
Custom retrofit plan
3
Precision Manufacturing
3,000㎡ workshop
Vacuum brazing
4
Installation & Commissioning
Professional on-site team
Precise installation
5
O&M Upgrade
Long-term maintenance
Lifetime technical support

Leading Honeycomb Seal Technology Provider in China

Founded in 2002 and headquartered in Shanghai Minhang, Shanghai Dandi Power Technology Co., Ltd. is the pioneer of honeycomb seal technology for steam/gas turbines in China.

🏆

Industry Pioneer

The originator of honeycomb seal technology for steam/gas turbines in China, with 24 years of deep technical expertise — a recognized industry benchmark and hidden champion.

🔬

High-tech Certified

Certified as a High & New Technology Enterprise, with dual ISO9001 / AS9100D certifications and a Class-II qualification in power engineering construction contracting.

⚙️

Full-lifecycle Service

From design → manufacturing → installation → commissioning → O&M → upgrade, we deliver turnkey solutions covering the entire lifecycle of your turbine units.

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Import Substitution

Breaking foreign monopoly with localized high-end honeycomb seals — cutting costs by 40%-60% and shortening delivery from 3-6 months to 2-4 weeks, with zero supply-chain risk.

ABOUT US

About Us

Shanghai Dandi Power Technology Co., Ltd., formerly known as Mudanjiang Electric Power Technology Research Institute, was established in 1992. In 1998, Aidi Power Technology Co., Ltd. was founded, and Shanghai Dandi Power Technology Co., Ltd. was established in 2002. In 2007, the Qinhuangdao Branch was expanded into a high-tech enterprise integrating scientific research, production and trade, mainly serving the power system. Since its establishment in 1992, the company has been engaged in industrial rotary equipment sealing technology research, products and services.
PRODUCTS

Products

Industry

Manuf. & Svc.

OUR ADVANTAGES

Our Advantages

  • First-mover Technical Advantage

    As the domestic pioneer of honeycomb seals with complete independent intellectua···

  • Imported Original Materials

    All honeycomb seals use original US HTH-imported Hastelloy-X honeycomb strip, wi···

  • Complete Manufacturing Capability

    Standardized and fully optimized quality control, craftsmanship manufacturing pr···

  • Mature On-site Engineering Team

    In-house certified professional installation and maintenance technicians can per···

NEWS

News

  • Company News
  • Industry News
2026-03

11

Dandi Power Engineering Team Completes Batch Valve Repair Project at Hebei Xingtai Power Plant

As the first job after the Spring Festival resumption, the Shanghai Dandi Power construction team rushed to Guotai Power Plant in Xingtai, Hebei, to complete a full set o···

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2025-12

06

Dandi Power Invited to 2026 Thermal Power Energy-saving & Decarbonization Tech Exchange Conference

The 2026 National Thermal Power Unit Energy-saving & Efficiency-enhancement Tech Exchange Conference was held in Jiangsu. Shanghai Dandi Power, as a benchmark enterprise ···

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2025-12

06

Dandi Power Successfully Renews Multiple Turbine Seal and Maintenance Tool Patents

Recently, the National Intellectual Property Administration completed the renewal review of several utility model patents of Shanghai Dandi Power, including retractable h···

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2025-12

05

Dandi Power Adds Vacuum Brazing Equipment to Expand Annual Honeycomb Seal Production Capacity

To match the growing orders for energy-saving retrofits of thermal power units nationwide, the Qinhuangdao production base of Shanghai Dandi Power has completed the Phase···

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2025-12

05

Dandi Power Completes Whole-unit Honeycomb Seal Retrofit for Huaneng Xuzhou 1000MW Unit

Dandi Power has successfully completed the whole-unit honeycomb seal retrofit for the 1000MW unit of Huaneng Xuzhou Power Plant. The project covers HP/IP/LP cylinder diap···

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Hotline:

13701313549

Address:

No. 29 Du Road, Minhang District, Shanghai
Qinhuangdao Branch: No. 2 Mudanjiang Road, Economic Development Zone, Qinhuangdao

Email:

sales@ddpower2002.com

WeChat Consultation

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