Warning: Missing argument 3 for write(), called in /www/wwwroot/biwei1.cn/incs/robot.php on line 68 and defined in /www/wwwroot/biwei1.cn/incs/data.php on line 487 Warka Water structures consist of a bamboo frame supporting a mesh polyester material inside. Through rain and condensation they can collect 100 liters of clean drinking water a day [read more, full video: ]