Nkọwa nke ngwaahịa Black boopypropylene dị ọcha (biliedylenenene) ihe nkiri na-eme ihe nkiri, nke a na-akpọ maka ike ha, nke dị iche iche, na ezigbo ike mbipụta akwụkwọ. Isiokwu a na-enyocha njirimara, uru, na ngwa nke ihe nkiri BIPP BLPP na-apụta,...