http://pastport.jp/user/hhcircuits ja-JP Huihe Circuits is a professional manufacturer of high-density multilayer printed circuit boards, prototype and mass production PCB's. https://www.hhcircuits.com/ 2022-03-31T11:08:09+0900 http://pastport.jp/user/hhcircuits/timeline/Xinfeng%20Huihe%20Circuits%20Co.%2C%20Ltd. hhcircuits http://pastport.jp/user/hhcircuits/timeline/Xinfeng%20Huihe%20Circuits%20Co.%2C%20Ltd.