350 — a

The letters of the PC mean that Portland cement is located in the package. Near the letter designations, the figure is usually affixed, it indicates the maximum load that the cement can withstand in the form of a solution. Most often you can see the numbers 750, 500, 400, 350 — a weight that easily withstands 1 cubic meter of cement. The higher this indicator, the higher the load allowance. So, it is he who is suitable during the construction of, for example, panel houses, with their heavy structures. M350 cement is not suitable for building buildings in several floors built from stone blocks — in this case, for reliability, you should prefer M750 brand.