Free storage time is only 30 days.

免费仓储时间只有30天。

Disadvantage: free storage time is only 30 days.

劣势：免费仓储时间只有30天。

The storage time depends on the size of the file.

存储时间取决于文件的大小。

The storage time could be prolonged by adding retarder.

加入适量阻聚剂可以延长其保存期。

So in addition to the storage time, with instruments? What?

所以除了时间外，储藏用的器具是什么？