Shaanxi Yanchang Petroleum Group was founded in 1905 and is one of the earliest petroleum and chemical products manufacturers in China. Shaanxi Yanchang Petroleum Group is a large petrochemical integrated enterprise integrating oil and gas exploration, development, refining, chemical industry, storage and transportation, sales, engineering construction and machinery manufacturing, and is one of the enterprises with a relatively complete energy and chemical industry cluster in China. Headquartered in Yan 'an City, Shaanxi Province, the company has 33,000 employees and is a large regional enterprise group with strong strength and influence in China. 

Hanzhong Xinhuan has provided several dry transformers of various types for the major subsidiary projects of Shaanxi Yanchang Petroleum Group, such as: Yan 'an Natural Gas storage and peak balancing and supporting LNG projects of Shaanxi Yanchang Natural Gas Co., LTD.; Shaanxi Yanqing Mountain Technology Engineering Co., LTD. Cocoa cover project; Acetic acid series products project of Shaanxi Yanchang Petroleum Yulin Coal Chemical Co., LTD. 

Hanzhong Xinhuan's high-quality services and products have been praised and recognized by Shaanxi Yanchang Petroleum Group and its subsidiaries. Hanzhong Xinhuan's stable and high-quality transformer products have provided strong power support for the smooth implementation of various projects. The realization of these projects has an important help for the regional economic development of Shaanxi and the construction of Shaanxi into a strong province in the west.