I-QN1803 insimbi engenasici yeyosapho lwe-QN oluphuhliswe yiQingtuo Group, equka i-QN1701, i-QN1804L, i-QN1906Mo, kunye ne-QN2109Mo. Njengesizukulwana esilandelayo, i-high-nitrogen austenitic alloy, i-QN1803 yenzelwe ukuvala umsantsa phakathi kokusebenza kunye neendleko, inikezela indawo enyanzelekileyo ye-304 yensimbi engenasici.