Tianjin Huachuanyuan Electronic Sales Co., Ltd.
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Tianjin Zhonghuan Semiconductor Joint-Stock Co., Ltd.
🇨🇳 China
1983501-1000 peopleManufacturer/Trading CompanyHigh capacity factory
Established brand
OEM manufacturer
Shipments
1
Key customer
TIANJIN ANHAI
Key market
Europe
Description
Tianjin Zhonghuan Semiconductor Joint-Stock Co., Ltd. is a leading manufacturer and trading company based in Tianjin, China, specializing in discrete semiconductor devices. Established in 1983, the company has grown to become the world's largest manufacturer of high-voltage silicon diodes, employing between 501 and 1000 people. With 36 years of professional experience, they have consistently imported advanced production technology and equipment from Japan and the US. Their extensive product portfolio includes high-voltage diodes, ultra-fast recovery diodes, special high-voltage diodes, diodes for microwave ovens, high-voltage diodes for car ignition, and various bridge rectifiers (SIP-Type, SQIP Type, SMD-Type, DIP Type) ranging from 0.5A to 25A and 200V to 800V. These components are widely utilized in applications such as fly-back transformers, high-voltage generators, microwave ovens, X-ray machines, TVs, monitors, air cleaners, water purifiers, security devices, air conditioners, washing machines, and adaptors. The company operates a factory and holds ISO 9001 certification, having previously achieved ISO 9002:1994 and ISO 9001:2000. With an annual output exceeding 1 billion pieces and an output value over 200 million RMB, Tianjin Zhonghuan Semiconductor Joint-Stock Co., Ltd. exports to over 21 countries and regions across Asia, Europe, and America, serving major clients like LG, Samsung, Thomson, Philips, and Konka. They hold a significant global market share, including 43% abroad and 50% domestically for high-voltage diodes, and over 20% for rectifier diodes and 50% for bridge rectifiers in China's CTV market.
SQIP Type Bridge Rectifier for Different Types of Electronic Equipment
DIP Type Silicon Bridge Rectifier with 0.5 to 1A, 200 to 800V
Silicon Special High-Voltage Diode with 5 to 200kV
SIP-Type Bridge Rectifier with 10 to 25A, 200 to 800V
Diodes for Microwave Ovens
Special High-Voltage Diodes with a 10 to 500mA Current
SMD-Type Bridge Rectifier for Different Types of Electronic Equipment with 0.8A -1A Current
SIP Type Bridge Diodes With 1 to 2A, 200 to 800V
Tianjin Huayun Automation Control Co., Ltd.
🇨🇳 China
1993101-200 peopleManufacturer/Trading CompanyEstablished brand
OEM manufacturer
ODM manufacturer
High-tech enterprise
Key market
🇯🇵 Japan
Description
Tianjin Huayun Automation Control Co., Ltd. is a professional manufacturer and trading company based in Tianjin, China, specializing in industrial automation and electrical control systems. Established in 1993 and restructured in 2000, the company operates a production facility of up to 3,000 square meters and employs between 101 and 200 personnel. The firm is recognized for its strong technical foundation, developed through strategic collaborations with the Motor Key Laboratory of Tsinghua University and the Tianjin Institute of Electric Transmission Construction. This partnership led to the creation of a world-class frequency conversion automation technology platform and domestic-leading three-level medium-voltage devices.
The company's core product portfolio includes HYEPS emergency power supplies, medium-voltage variable frequency devices (HYMV), and low-voltage electrical apparatus such as the HYG1 automatic transfer switch. These high-tech, energy-saving solutions serve diverse sectors including oilfields, electric power, chemical engineering, and the beer industry's automation sector. As an integrated enterprise, Tianjin Huayun provides comprehensive services ranging from scientific research and professional consultation to custom ODM and OEM manufacturing. Their technical expertise extends to advanced control technologies including OMRON, Schneider, and Siemens PLC systems.
With ISO 9001 certification, Tianjin Huayun Automation Control Co., Ltd. maintains a robust quality control system. The company has a significant international presence, exporting approximately 31% to 40% of its output to markets across North America, Southeast Asia, Africa, and the Middle East. Annual sales volume is estimated between US$10 million and US$50 million, reflecting its established position in the global automation and energy equipment market.
Variable Frequency Device (HYMV)
Automatic Transfer Switch (HYG1)
Emergency Power Supply (HYEPSZ-10KW)
Emergency Power Supply (HYEPSZ-3KW)
Emergency Power Supply (HYEPSZ-5KW)
Automatic Transfer Switch (HYQ1)
