First of all, it is necessary to pay attention to the packaging of cement, where the standard — ISO -9000 should be indicated. Even if you acquire a large batch of cement, you still need to study each packaging. The cement should be well packed in a four -layer or three -layer packaging, which will protect it from various harmful environmental influences. It is the integrity of the package that guarantees that the building material you purchased is really not subject to opening the packaging and not damaged.
