What are the quality problems of Zhejiang Wanma Cable Co., Ltd. in recent three years?

The tensile strength and elongation of the sheath are unqualified before aging. During the construction of Zhejiang Wanma Cable Co., Ltd. or under the high-temperature environment with long-term electrification, the insulation layer is easy to break, and the conductor is exposed and charged, which is in danger of electric shock and short circuit. The main reason for its failure is that small and medium-sized enterprises that do not have production qualifications use recycled materials to reduce product costs.