全信是上海书凡实业有限公司电子器件事业部的商标。公司经营之产品皆为国际知名品牌。产品广泛用于仪器仪表，工业自动化，自控设备，音响设备，通讯，医疗设备，金融设备，安防设备，家用电器，汽车，消防，UPS电源，柴油发电机组，低压电气成套厂，配电柜，电梯，机械等领域。

目前经营的产品主要分两大领域：主动元件部分及被动零件部分。
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FOXTEN is the sub brand of Shanghai Shufan Industrial Co., Ltd. Electronic Department. Specialized in the market of semiconductors and control components for industrial use. Both are products of companies operating internationally famous brands. Products widely used in the instrumentation, industrial automation, automotive equipment, audio equipment, telecommunications, medical equipment,household appliances, automobiles, UPS,inverter, elevators, and other fields.