Xiangshui Longda Transmission Power Inc.
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Jiangsu Shuanghui Power Development Co.,Ltd.
🇨🇳 China
1995301-500 peopleManufacturer/Service CompanyEstablished brand
OEM manufacturer
ODM manufacturer
Own brand
Shipments
1088
Key customer
NATIONAL GRID
Key market
🇵🇭 Philippines
Description
Jiangsu Shuanghui Power Development Co., Ltd., established in 1974 and headquartered in Yangzhou, China, is a premier manufacturer and high-tech enterprise specializing in electrical line hardware and fittings. Operating from an 80,000 square meter facility with a workforce of approximately 485 employees, the company has established itself as a leader in the global power industry. They provide comprehensive solutions for high-voltage and ultra-high-voltage transmission lines and substations, including AC 1000kV and DC ±800kV projects. Their extensive product portfolio features over 4,000 varieties across six categories, such as switchgear, substation fittings, transmission line hardware, suspension clamps, tension clamps, and spacer dampers.
As a certified OEM and ODM provider, the company maintains rigorous quality standards with ISO 9001, ISO 14001, and ASME certifications. Their manufacturing capabilities are supported by an annual production capacity of 20,000 tons, encompassing aluminum casting, forging, stamping, and hot-dip galvanizing. A dedicated R&D team of 25 specialists utilizes advanced design tools to innovate in material science and product structure, contributing to a record of zero failure rates across thousands of miles of served transmission lines.
Jiangsu Shuanghui Power Development maintains a strong international presence, exporting to over 150 countries. They serve as a long-term supplier to major utility companies including the State Grid Corporation of China, China Southern Power Grid, and international partners such as AFL Telecommunications, Pfisterer, and Lindsey Manufacturing. Their expertise in both gas-insulated and air-insulated switchgear, combined with their robust export operations to North America, Europe, and Asia, positions them as a critical partner in global energy delivery infrastructure.
Electrical Power Fittings
Splice and Sleeve$1
Spacer Damper$1
TLD Automation Technology (shanghai) Co., Ltd.
🇨🇳 China
202151-100 peopleManufacturer/Trading Company/Service Company/Wholesaler/DistributorOwn brand
Product customization
Patented technology
High-tech enterprise
Shipments
52
Key customer
MISPL SYSTEMS
Key market
🇮🇳 India
Description
TLD Automation Technology (Shanghai) Co., Ltd., also known as TLDE, is a professional manufacturer and automation technology enterprise specializing in the research, development, and production of motor drive and control systems. Headquartered in Suzhou, China, the company operates an extensive 18,000 square meter facility, including a 16,000 square meter automated plant and a dedicated R&D center. With a workforce of 51 to 100 employees, over 30% of whom are technical management and R&D personnel, the company holds ISO 9001 certification and numerous intellectual property rights, including invention patents and software copyrights.
The company's core product portfolio includes DC/900 series DC drivers, AC120 high-end inverters, TL600 vector inverters, and DC transmission cabinets. These solutions are engineered for industrial energy saving and automated control applications across diverse sectors such as metallurgy, cable manufacturing, papermaking, rubber, mining, and oil fields. TLDE is recognized for its independent R&D capabilities, utilizing 32-bit CPU technology in its digital DC governors to ensure high control precision and stability.
As an OEM provider and exporter, TLD Automation Technology serves international markets across East Asia, the Middle East, Europe, and the Americas. The company maintains industry-university-research collaborations to drive continuous technological innovation and product upgrades. Their commitment to quality and technical marketing allows them to provide cost-effective equipment and customized solutions for complex mechanical and electrical transmission control requirements.
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