... absorption capacity.3.easy off, and dust is low. 4. good capacity and strong dust, and very ... absorption capacity. 3.easy off, and dust is low. 4. good capacity and strong dust, and very effective ... absorption capacity. 3.easy off, and dust is low. 4. good capacity and strong dust, and very effective ... absorption capacity. 3.easy off, and dust is low. 4. good capacity and strong dust, and very effective ...