Prussian electric box is a product of Siemens. PURUSAN, the brand of Siemens (China) Cable Co., Ltd., applied in China National Intellectual Property Administration Trademark Office on May 2, 20 19. Trademark goods/services: telephone lines; Telecommunication cable; Communication cable; Computer cable; Optical fiber for transmitting sound and image; Junction box (electric); Electric switch; Distribution box; Electric wire; Power supply materials (wires and cables)