Tianshui Changcheng Switchgear Group Co., Ltd. (CTCS), established in 1969 and headquartered in Tianshui, Gansu Province, China, is a prominent manufacturer specializing in the research, development, production, and sales of high, medium, and low-voltage switchgear equipment and electrical components ranging from 0.4kV to 126kV.

With over 50 years of experience, CTCS has become a leader in China's switchgear industry, offering products characterized by gas insulation, intelligence, compact size, and high reliability. Their offerings include high-voltage switchgear, medium-voltage switchgear, low-voltage switchgear, and related electrical components