In 2011, Jiangsu Zuojiang Building Energy Conservation Technology Co., Ltd. took Jingjiang as the starting point and entered the door and window industry, with 13 years of product application and service experience to date; Carry out multi brand layout development in East China. Serving over 5000 fine decoration projects, villas, and mansions. Establish multiple professional sales, design, installation, and after-sales service teams; In 2020, WICONA, a top European brand, was introduced as its partner in China; Currently, flagship stores have been established in Jingjiang, Dongyang, Kunshan, and Shanghai to create a situational experience space. The products mainly involve system doors and windows, curtain walls, sunlight rooms and skylights to meet various Functional requirement.