Pepa haleua hana ʻia ma ʻAmelika Hui Pū ʻIa i nā makahiki 1930.I nā makahiki 1980 mua, ua hoʻokomo mua ʻo Wuhan Iron a Steel a me Baosteel i nā laina hana kila i uhi ʻia i ka kala.Mai ia manawa, ua hoʻomaka koʻu ʻāina e hoʻopili i nā panela i hoʻopaʻa ʻia i loko o ka hale i nā hale ʻoihana, e like me Shandong Master Plant, National Cotton and Grain Warehouse, Plants ma nā ʻāpana hoʻomohala like ʻole, etc. ʻenehana, hoʻomau ka hoʻonui ʻia o ka noi a hoʻonui ʻia ka dosage.
Ke komo nei i ke kenekulia 21, ua ulu wikiwiki a paʻa ka hoʻokele waiwai o koʻu ʻāina.Ua komo pū nā pale uhi uhi kala i nā hale ākea ākea ma nā wahi a pau mai nā hale ʻoihana maʻamau, e like me nā kahua mokulele, nā kahua kaʻaahi, nā kahua pāʻani, nā keʻena ʻaha mele, a me nā hale keaka nui.Ma nā wahi 'Olumepika i ka makahiki 2008.ʻO ka hale, ka papahele a me ka paia o ka hale e hoʻohana i kahi ʻano pā me ke koʻikoʻi kūpono a me ka pilina, a ʻoi aku ka ʻepekema o ke ʻano hana a ʻoi aku ka ikaika o ka pale ʻana i ka corrosion.Aluminum-zinc pā, aluminika-magnesium-manganese pā kila, titanium alloy plate, stainless steel, etc. Ua hoʻomaikaʻi nui ka noiʻi a me ka hoʻomohala ʻana i ka pae ʻenehana noiʻi o nā papa metala subtype.
Ka manawa hoʻouna: Dec-30-2021