回顾一下十几年来国内邮市的变化情况，很多人都知道这样一个现象：发行量小，邮票则火爆，但群众买票难，意见大；于是增量，邮市随之转冷，提前出售、低面值出售等现象增多，库存压力增大。于是又减量，后果自然如前，不断循环往复，形成“增减量怪圈”。有人认为，集邮... Reviewing the changes in the domestic postal market over the past decade or so, many people are aware of the phenomenon that circulation is small and stamps are hot, but mass buying of tickets is difficult and the opinions are great. Therefore, the increment and the postal market turn cold and advance sales , The phenomenon of low face value increased sales, inventory pressure increases. So again, the consequences of the natural as before, continue to cycle back and forth, forming a “circle of increase and decrease.” Some people think that philatelic ...