Dalian Suntak Circuit Co., Ltd. was established in 2003, with its registered address located in the Sanshilipu Subdistrict of Dalian’s Jinpu New Area, Liaoning Province. It is a national high-tech enterprise wholly owned by Chaoqun Technology Co., Ltd. (stock code: 002815.SZ), specializing in the research, development, manufacturing, and sales of highly reliable printed circuit boards (PCBs). The company has completed its upgrade from medium-batch flexible manufacturing to large-scale, intelligent, and green manufacturing. Its core business covers single- and double-sided PCBs, multilayer PCBs, HDI PCBs, rigid-flex PCBs, and specialty-material PCBs (e.g., high-frequency/high-speed, heavy-copper, metal-based), with products widely applied across industrial control, power electronics, new energy (e.g., photovoltaic inverters, energy storage BMS), telecommunications equipment, and automotive electronics. Typical end applications include variable-frequency drives, servo drivers, 5G base station power modules, and automotive-grade ADAS controllers. Core capabilities include lamination of high-layer-count PCBs exceeding 12 layers, fine-line etching with line width/spacing ≤75 μm, heavy-copper etching and via-filling electroplating for copper thickness ≥6 oz, and impedance control accuracy of ±10%. Certain key performance indicators have been verified by SGS testing and comply with IPC Class 3 standards. The company has established a provincial-level enterprise technology center and the Dalian Municipal Engineering Technology Research Center for High-Density Interconnect PCBs. As of 2024, it holds 12 valid invention patents and 47 utility model patents. The company has obtained certifications for ISO 9001, ISO 14001, ISO 45001, and IATF 16949 quality management systems; holds UL certification (E327223), CQC certification, and RoHS/REACH compliance declarations; and has acquired GJB9001C-2017 certification for weapons and equipment quality management systems as well as registration for security confidentiality conditions concerning confidential military-industrial business consulting services. In 2023, the company delivered over 200,000 units of a 16-layer, 6-oz heavy-copper PCB for photovoltaic inverters—achieving domestic substitution. Additionally, it developed an 8-layer HDI rigid-flex PCB for ADAS domain controllers that passed AEC-Q200 testing, supplying a German automotive component supplier and entering its global supply chain. Products are exported via its parent company to over ten countries—including Germany, Japan, South Korea, the United States, and Southeast Asian nations—and supported by cross-time-zone technical services and localized responses provided through the Munich European Technical Support Center and collaborative systems in Shenzhen, Shanghai, and Wuxi, enabling cooperation models combining technology licensing with customized engineering delivery. Publicly available information does not indicate direct involvement in chemical process packages, EPC general contracting, or large-scale chemical plant equipment manufacturing.