华德电子于1968年成立于台湾，是台湾家专业保险丝制造企业，

Tianyi technology, founded in 1988, has the ability to develop and manufacture chip resistors and resistors. In quality management through the ISO - 9001, ISO - TS16949, TTQS certification and conform to the AEC - Q200 automobile electronic self testing standards, and product yield by pointer, and customer satisfaction survey report of the analysis and improvement to continuously improve the quality of products and services of the company, to enhance the customer's trust in the company, and establish good partnership with customers.

It is a professional technology company mainly engaged in high-tech semiconductors and passive components. It is also one of the largest suppliers of SMD chip electronic components and alloy resistors in China. So far, it has become a special distributor and agent of many famous brand manufacturers in Europe, America, Japan, Korea and Taiwan. The company is headquartered in Hong Kong and is also in Paris, the Philippines and other overseas...

Shenzhen Sunway Communication Co., Ltd. was established on April 27, 2006 and is one of the first national high-tech enterprises. On November 5, 2010, the company was listed on the ChiNext board of the Shenzhen Stock Exchange with the stock code 300136.SZ. Relying on the world's leading RF device R&D, design, and manufacturing solution provider, we provide customers with comprehensive standard passive component solutions - resistors, capacitors, and inductors. The product applications involve consumer electronics (smartphones, personal computers, smart wearables, etc.), automobiles, Internet of Things/smart homes, communication, data centers, and other fields. It is a new generation of information industry technology supported and encouraged by the state.

UTC Group was founded in 1990, dedicated to the research and development, design, manufacturing, packaging, testing, and marketing of analog ICs and discrete components. The products mainly consist of analog ICs (covering power management, power drivers, operational amplifiers, comparators, digital amplifiers, logic ICs, etc.), and discrete devices (including low-voltage MOS transistors, high-voltage MOS transistors, super junction MOS transistors, IGBT single transistors, fast recovery diodes, Schottky diodes, TVS diodes, voltage regulators, transistors, digital transistors, high-frequency transistors, bidirectional thyristors, unidirectional thyristors, etc.).