ISO9000 quality system certification is a third-party certification activity carried out by a national or government-recognized organization based on ISO9000 series quality system standards.
Recently, the Tangshan Municipal People's Government released the "2021 National Economic and Social Development Statistical Bulletin of Tangshan City".
The latest data from the China Iron and Steel Association shows that in the first quarter, my country's pig iron output was 201 million tons. In the same period, the national steel consumption was about 235 million tons.