Excerpt: Less than three years after Zhejiang Dingmei Electric Co., Ltd. and Guangdong Rongsheng Electric Co., Ltd. concluded a "strategic alliance" in 2010, the relationship between Rongsheng and Dingmei has become closer again. Since 2012, Rongsheng integrated ceiling gussets and auxiliary materials will all be produced by Zhejiang Dingmei Electric Co., Ltd., and the "Dingmei" trademark will be used on the gussets and auxiliary materials.