Na Julaị 2020, ụlọ ọrụ anyị gbadoro anya na njiri mara igbe nkedo, wee mepụta ụgbọ ala nkedo pụrụ iche, uru nke ụgbọ ala nkedo bụ:
1.Strong mkpuchi ikike, site na 1550 degrees 1400 degrees, gbanwee 1550 degrees 1450 degrees.
2. Nkedo nkedo dị ngwa ngwa, nke nwere ike hụ na ngwaahịa ahụ na-ejuputa ngwa ngwa na nke ọma.
3. Chekwaa ọrụ, ụgbọ ala nkedo na-eji ìhè square ihu, nke na-eme ka nrụpụta mmepụta dịkwuo mma.
Oge nzipu: Jan-25-2021