Tsawon ƙarni, injin tsintar shayi sun kasance al'ada a cikin masana'antar shayi don karɓar shayi bisa ga ma'auni na "ɗaya ɗaya, ganye biyu".Ko an tsince shi da kyau ko ba a tsince shi ba kai tsaye yana shafar gabatar da dandano, kofi mai kyau na shayi yana aza harsashin sa lokacin da aka tsince shi.

A halin yanzu, masana'antar shayi na fuskantar matsaloli masu sarkakiya.Daya daga cikin abubuwan da suka fi yaduwa a harkar noma a duniya shi ne, kasuwanci na karfafa wa masu samar da kwarin gwiwa wajen fadada abin da ake nomawa, wanda ke haifar da wuce gona da iri, da raguwar farashi da kuma karancin kudin shiga.Shekaru 60 da sauri, kuma waɗannan masu samar da shayi na kayayyaki za su fuskanci yanayi daban-daban: farashin samar da kayayyaki ya tashi saboda yawan farashin da aka yi da hannu, amma farashin ya kasance mai tawayar.Don ci gaba da kasuwanci, masu sana'ar shayi dole ne su koma ƙaramar aikina'urar shan shayi.

A Sri Lanka, matsakaicin adadin masu zaɓe a kowace hectare nainjin lambun shayian rage shi daga matsakaita na biyu zuwa daya kawai a cikin shekaru goma da suka gabata, saboda yana da sauƙin amfani da injinan noman shayi don tsinke ganyayen ganye.Tabbas, masu shan shayi ne ke fama da wannan canjin.Ko da yake ba su damu da kaifi Yunƙurin a kiri farashin, da dandano nasaitin shayia hankali sha yana raguwa.Duk da ƙananan ƙa'idodin zaɓe da ƙarancin masu shan shayi, har yanzu yana da wahala a sami aikin zaɓen da ya dace - ƙirar ƙima mai ƙima mai ƙima shine ƙirar damisa na yau da kullun, don haka babu makawa masu kera shayi su canza zuwa ɗaukar injin.