1. Ran vulhnaa liquid nitrogen hmannaah hian ran vulh freezing improvement technology te, liquid nitrogen ultra-Microorganisms technology temperature hniam tak humhalh te, leh liquid nitrogen-a -196 degree-a strain te long- te pawh a tel a ni. A principle chu microorganisms hmanga microorganisms te chu -130℃aia hniam zawka an tih dan inthlak danglam a, a hun taka thlak danglamin a tha thei ang bera humhalh a ni. Agricultural biological genes, vaccine preservation, leh liquid nitrogen hman te pawh a awm a, chu chuan bawnghnute leh ran vulh vun natna hrik pawn lam atanga inkharkhip khar a nih theih nan a enkawl bawk.
2. Dik tak chuan, damdawi lam hnathawhnaah chuan ran vulhnaa hman dan nen hian a inang deuh deuh a, mahse a buaithlak zawk a, a chi hrang hrang a ni. Clinical cryotherapy hian transplantation damdawi siamna kawngah a pui a ni. Cryotherapy hi tissue-a thawk turin temperature hniam tak hmanga enkawl a nih theih nan necrosis a thlen theih dan a ni. Biochemical process a ni.
3. Food industry hman dan lamah chuan ei leh in lama liquid nitrogen hman dan chu preservation method tam takah hman a ni nasa hle a, a nghawng pawh a lang chiang hle. Freezing method dang nena khaikhin chuan liquid nitrogen quick freezing hian freezing speed chak tak a nei a, ei tur quality a vawng tha a, material dry consumption a nei tlem a, hmanrua leh power man a tlawm bawk. Productivity tihsan nan mechanized leh automated production lines tihfel a awlsam hle. Tin, kan in tur in tur ah hian nitrogen a awm bawk. Nitrogen emaw nitrogen leh C02 inzawmkhawm emaw hmangin traditional C02 aiah hman a ni a, chu chuan storage tank chunglam space-a gas chu a lazy a, chu chuan thil chhe thei thil dahkhawm hun chhung a tizau a ni. Thlai, thlai leh sa thil siamte humhalh a nihna thiltihtheihna a nei a; Low-Temperature tihchhiatna chu pawn lam chakna hnathawh hnuaia brittle point temperature-a cooled substance cooled chu powder-a then a ni a Food packaging leh refrigerated transportation-ah te hman a ni.