Jiangsu Haitian Jinning Sanhuan Co., Ltd.(HJS) is a large scale manufacture of soft ferrites,
which is a joint venture of Sinosteel Tianyuan Co., Ltd，Jingning Electronic Group., Ltd (former state
owned No.898 Factory), Beijing Zhongke Sanhuan Hi-tech Co., Ltd. HJS has inherited Jingning's nearly
40 years' rich experiences on soft ferrite manufacturing and its superiority on human resources, with the
backup of Zhongke Sanhuan's abundant capital and good prestige in industry, especially after the fully
introduction of Sinosteel Tianyuan's strong R&D support, advanced manufacturing technology and
scientific management system, HJS is now one of the largest and strongest soft ferrite manufacture in
Chinese mainland.
“JSF” production has covered almost all series of soft ferrite materials: Mg-Zn, Mn-Zn and Ni-Cu
Zn, with dozens of material brands and hundreds of core specifications available. Varieties of
transformers and windings made of our products are widely used in areas of computer and its periphery
device, communication, internet, automobile，green energy sources，office automation, LCD、HID etc.
domestic AV devices, EMC, green lighting, industries, medical treatment instruments, automobile
electronics，new energy sources and so on. Besides ferrite cores, HJS also provides its customers ferrite
pellets which can be directly used to be formed into ferrite cores.
This manual is a corpus of data of soft ferrite products manufactured by HJS. Take your time to
refer to it when selecting our products. Your inquires about related technical and commercial questions
are always welcome.