The Beijing Hepingli Post Office will test the new ink-returning day stamp on April 18, 2020. This postmark is more used abroad and is more friendly to novices. But it cannot be adapted to all occasions and is inefficient.
Each postmark has its own advantages and disadvantages, whether it is a steel stamp, or an ink storage postmark, or this new type of new ink return day stamp. It is best to cover the collection-level day stamp, or the steel stamp, but the skill threshold is high, and the postal staff basically cannot cover the collection-level steel stamp.
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