... and technology. To make the exhibitors and buyers get more effective, Roof China will promote itself all ... Inc., JOABOA Technology, Guangzhou Botny Cho., Lemical Co., Ltd., Jiangsu Canlon Building Materials Co., Ltd., DR. Waterproof, Guangzhou Supe Chemical Ctd., Dayu ... Waterproof, Guangzhou Topu Building Materials Co., Ltd., etc. Concurrently with the following fairs----share high ...