As long as there is no problem in management, the production cost of cement is similar, and the difference lies in the transportation cost, including raw materials and finished products. Therefore, cement manufacturers are now engaged in collectivization and regionalization, which will monopolize the market and reduce transportation costs. The same brand you mentioned, an unreasonable manufacturer, may be like this, but it is produced by the same cement group, not a factory.

Cement is a national inspection-free product, and its strength can be achieved, otherwise it will not leave the factory. Especially now, the building implements lifelong responsibility system, and no one dares to take this risk. The difference in quality lies in the strength of wealth, that is to say, PO425, the national standard is that the 28-day compressive strength is not lower than 42.5MPa, the good one may reach 50.5MPa, and the almost one may reach 43.2MPa, all of which are qualified, but 50.5MPa is rich and the quality is better. There is no problem with the use of the building.

PS:

This situation is rare. If you catch up with the manufacturer to change the packaging bag, the manufacturer will not change it. Ask the dealers who sell this batch of goods if there is any problem, because some dealers sell cement from big factories and buy cement from small factories, but the small factories have no trademarks and secretly use packaging bags from other factories, commonly known as fake cement. The quality is not guaranteed. You can ask the dealer first.