According to regulations, for ease of identification, to prevent misuse and ensure the safe operation and maintenance personnel, using different colors to distinguish the device characteristics. An electrical bus safety warning signs, A phase for the production of yellow safety warning signs, B phase is green, C phase is red, for surface-coated black ground wire. In the second system, the AC voltage circuit applications with yellow safety warning signs, AC current circuit design with green safety warning signs, signals and warning circuits with white. Choose a material safety signs on the surface is not flat, or too rough walls, you should use a polypropylene sheet. 2, a flat surface can be self-adhesive stickers. For more information, please continue to focus our site, we will continue to bring you more relevant product knowledge. Safety warning signs production, Yu Po plate. (Certified), Anhui safety warning signs provided by Changyuan Yu Po signs Limited. Changyuan Yu Po signs Ltd. (www.hnypbp.com) Henan Xinxiang, nameplate leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Yu Po sign in leadership with the staff warmly welcome all inquiries negotiations to create Yu Po signs a better future.