——Wang Yijian, President of Hangzhou Five Source Science and Technology Co., Ltd.

——Jiang Junxing, Sales Director of Chingfeng Enterprise Co.,Ltd.

——Shi Weibin, Product Department Manager of Universal Plating Chemical Company Limited.

——Gong Chuangchen, General Manager of Chongqing Juke Environmental Protection Co., LTD

——Liang Jiye, CTO of Meifute Environmental Technology (Guangdong) Co., Ltd.

——Hangkang, General Manager of Jiangsu Mengde New Material Technology Co., LTD

——Shi Yinfeng, Vice president of Shanghai Light Industry Research Institute Co., Ltd.

——Luo Longyue, Director of Shenzhen Xinwei Technology (Group) Co. LTD

——Liu Zican, General Manager of Guangdong Kaimeng Passivation and Rust Prevention Technology Co., Ltd.