What kind of company is TSTY?
TSTY Electric Co., Ltd. (TSTY) is a Chinese manufacturer of power transformers, box-type substations, and complete high- and low-voltage power distribution equipment. Founded in 1995 and headquartered in the industrial cluster of Jia County, Pingdingshan, Henan Province, the company is a recognized National High-Tech Enterprise that designs, produces, installs, and services electrical equipment across the full voltage range from 10 kV to 220 kV. TSTY positions itself as a premium-tier supplier for utility grids, renewable energy, and demanding industrial applications worldwide.
TSTY Company Overview
Full name: TSTY Electric Co., Ltd.
Founded: 1995
Headquarters: Jia County industrial cluster, Pingdingshan, Henan Province, China
Registered capital: RMB 101 million
Status: National High-Tech Enterprise; provincial "Specialized and Sophisticated" (Little Giant) enterprise
Intellectual property: 109+ patents; participation in national and group industry standards
Core voltage classes: 10 kV, 35 kV, 110 kV, 220 kV
Quality system: ISO 9001 certified
What TSTY manufactures
TSTY operates an integrated portfolio that covers conventional distribution, transmission, and new-energy applications:
Oil-immersed (liquid-filled) power transformers at 10 kV, 35 kV, 110 kV, and 220 kV, including energy-efficient designs compliant with the GB 20052-2020 standard
Epoxy cast-resin dry-type transformers at 10 kV and 35 kV
Amorphous alloy distribution transformers (both oil-immersed and dry-type) for low-loss, energy-saving operation
Box-type and prefabricated substations (European, American, and Chinese styles), including new-energy box substations
Smart voltage- and capacity-regulating transformers
Energy storage and power conversion equipment, including integrated storage-to-grid step-up units and energy storage cabinets
EV charging box substations and complete HV/LV switchgear assemblies
This breadth allows TSTY to serve a project from the medium-voltage distribution layer up to 220 kV grid connection, and to supply matching transformer and substation solutions for solar farms, wind farms, and battery energy storage systems.
A focus on quality and engineering performance
TSTY's high-end positioning rests on measurable engineering results rather than marketing claims. Its energy-efficient transformer series achieves lower no-load loss and a noise level reduced by roughly 20% versus the prior national standard, with design features such as low temperature rise, sealed leak-free construction, and strong short-circuit resistance.
The company has invested heavily in a "5G + digital" smart workshop, reporting a product qualification rate of 99.9% and a substantial gain in production efficiency from automation and digital process control. Research and development is supported by a provincial enterprise technology center, a transformer engineering research center, and a postdoctoral innovation base, with collaboration from electric power research institutes and leading Chinese universities.
International certifications for export markets
For buyers outside China, TSTY's products carry the certifications that matter for cross-border procurement, including IEC, CE, SGS, CCC/CQC, and GOST approvals. CE supports entry into European markets, GOST covers Russia and the CIS region, and IEC provides an internationally recognized performance baseline. This certification coverage is central to the company's strategy of serving high-requirement export customers rather than competing on price alone.
Landmark projects and global reach
TSTY is an approved supplier to China's State Grid and China Southern Power Grid, and its equipment has been used in major national infrastructure projects, including the Hong Kong–Zhuhai–Macao Bridge, the Three Gorges water conservancy project, the Hainan Free Trade Port, and supporting facilities for the Shenzhou-13 spacecraft launch.
Internationally, the company exports to more than 80 countries. It treats Africa as a strategic overseas market while actively developing the Middle East, Europe, South America, Central Asia, and Belt and Road economies such as Russia and Kazakhstan. This combination of a domestic track record on flagship national projects and a growing international footprint underpins TSTY's ambition to be a world-class supplier of electrical power equipment.
TSTY is a Henan-based, National High-Tech transformer and power equipment manufacturer offering oil-immersed and dry-type transformers, box-type substations, switchgear, and energy storage solutions from 10 kV to 220 kV. With ISO 9001 quality management, international IEC/CE/GOST certifications, 109+ patents, and a proven record on national landmark projects, TSTY serves utilities, renewable energy developers, and industrial customers seeking a reliable, premium-quality Chinese supplier.