与NIO团队一同走访双环原材料供 应商西宁特钢，针对钢材特性，质 量控制进行技术交流，从源头把控 供应商质量。

  Visit Xining Special Steel, which is the Shuanghuan’s raw material supplier.With NiO team to conduct technical exchanges on steel characteristics and quality control, so as to control the supplier's quality from the source.