Abstract: A safety air valve of a receiving bag includes an upper valve body, a valve seat and a valve gate. The upper valve body is installed inside the receiving bag. A first thread is formed at the protrusion stayed closely to the interior of the receiving bag. The first thread penetrates out the receiving bag; and a first main air channel is formed in the bottom of the first thread penetrating into the receiving bag so as to form a stepped valve opening on the top of the first main air channel. A second thread is formed at the valve seat corresponding to the first thread of the upper valve body. The second thread is screwed into the first thread and is positioned at the outer side of the receiving bag. The second thread has a press body corresponding to a first main air channel of the upper valve body.

Abstract: A combined storage apparatus comprises a storage bag and a storage box. The bottom of the storage bag forms an extended flat surface and is attached with a stiff board. Two sides of the stiff board are provided with locking members. Thereby, after the storage bag contains an article and is vacumed, two lateral sections of the stiff board are folded upward to form two sidewalls. The storage bag is then placed into the storage box. Since the combined storage apparatus is boxy and of tough structure, a plurality of them can be stacked up so as to save storage space.

Abstract: A moisture-proof sealing bag comprises a bag body and an exhausting valve. The bag body has an opening, which has a flexible belt on the opening end. A proper position under the flexible belt of the bag body has the exhausting valve. The exhausting valve is concealed inner the bag body, which comprises a valve body, an exhausting unit, a valve gate and an elastomer. The moisture-proof sealing bag has functions of moisture-proof and air-tightness so as to preserve the contents in the bag by use of sealing the opening of the bag with the flexible belt and exhausting the residual air with the exhausting valve.

Abstract: An exhaust valve used in a plastic bag for exhaust of air out of the plastic bag is disclosed to include a valve body, a valve flap directly fastened to the valve body to block the valve gap defined in the valve body, and a cap capped on an upright top stub tube of the valve body to hold the valve flap in place. When the suction nozzle of a vacuum cleaner/air suction device is attached to the cap and the vacuum cleaner/air suction device is started, the air suction force causes the valve flap to open the valve gate so that inside air is drawn out of the plastic bag. When the vacuum cleaner/air suction device is turned off, the valve flap is forced by the atmospheric pressure to close the valve gap again.