E whakaatu ana ngā tatauranga i tukuna e te International Stainless Steel Forum (ISSF) i te 7 o Oketopa, i te haurua tuatahi o te tau 2021, i piki ake te hanga maitai mata o te ao mā te 24.9% i ia tau ki te 29.026 miriona tana. Mō ētahi rohe, kua piki ake te putanga o ngā rohe katoa i ia tau: i piki ake a Ūropi mā te 20.3% ki te 3.827 miriona tana, i piki ake te Hononga o Amerika mā te 18.7% ki te 1.277 miriona tana, ā, i piki ake a Haina matua mā te 20.8% ki te 16.243 miriona tana, haunga a Haina matua, ko Āhia tae atu ki Kōrea ki te Tonga me Initonīhia (ko Inia, ko Hapani me Taiwan te nuinga) i tipu mā te 25.6% ki te 3.725 miriona tana, ā, ko ētahi atu rohe (ko Initonīhia, Kōrea ki te Tonga, Āwherika ki te Tonga, Brazil, me Rūhia te nuinga) i tipu mā te 53.7% ki te 3.953 miriona tana.

I te hauwhā tuarua o te tau 2021, tata rite tonu te hanga maitai mata o te ao ki te hauwhā o mua. I roto i ēnei, haunga a Haina matua me Āhia engari kāore a Haina, Kōrea ki te Tonga, me Initonīhia, kua heke te ōwehenga marama-ki-te-marama, ā, kua piki ake ngā rohe nui kē atu i ia marama-ki-te-marama.

Te whakaputanga maitai mata o te kowiri tira (wāhanga: mano tana)