... 25-35cm,35-60cm Finshed: natural & polished Used in landscape and garden Product introductionLandscape decoration used natural basalt column : ... County Hanwu Stone Factory, Beijing Hanwu Landscape Stone Company, Inner Mongolia Chifeng Hanwu Landscape Stone Factory, Inner Mongolia Basalt Mine, ... of Tokyo in Japan 3. Qingdao Seaside Park Landscape Project4. Ho Chi Minh Airport in Vietnam5. Taichung City ...