Shanghai Tangyi Electronics Co., Ltd. was established in Shanghai Qingpu Industrial Park in 2001 to manage and coordinate STEKI's business activities in Chinese Mainland. As the marketing headquarters in mainland China, it is engaged in industry investment, product marketing, customer after-sales service liaison in Chinese Mainland, and macro management and extensive business support for STEKI's affiliated enterprises in Chinese Mainland to promote the continuous development of STEKI's business in the Chinese market.