There are differences. 1. The standards are different. For example, the standards used in China are set in China, such as BV2.52, and the certification is different. For example, the certification used in China is CCC certification. But countries such as Europe use UL certification. But their roles are all the same. I remember we made wires in Africa. The wire they use contains three wires, two of which are insulated and the other is not insulated. If there are only two, we are called sheath line in China, but we can't name them in China.