Zhongxin General delivered a SZ20-31500/35 on-load tap-changing transformer for Jing Teng Energy Co., Ltd.’s new dedicated 35kV substation at their Alar City, Xinjiang industrial production base. Rated at 31,500 kVA with a 7-position OLTC providing ±7.5% on-load voltage regulation, this unit was delivered January 12, 2026 and confirmed in full operation by March 2026. This case study covers the complete project lifecycle: factory manufacturing, delivery, on-site installation, and commissioned operation. Also available in 33kV, 34.5kV and 36kV for international substation projects.