What is the relationship between Shuanglu and Sanlu?

It's okay. Shuanglu is the abbreviation of Shanghai Shuanglu Shangling Enterprise Group Co., Ltd., which is a large national first-class enterprise with refrigerators and air conditioners as its leading products. Its products involve washing machines, refrigerators, air conditioners, microwave ovens, solar water heaters, electric kettles and other fields. Sanlu is the abbreviation of Shijiazhuang Sanlu Group Co., Ltd. Its main product is milk powder. Because of the melamine incident and bankruptcy, so Shuanglu has nothing to do with Sanlu.