A cikin Maris 2021, Rainbow Karfe ya karɓi tambayoyi daga sabbin abokan ciniki.Samfurin da ake buƙata a wannan lokacin shine bututun galvanized rectangular tube.Tun da abokin ciniki yana aiki tare da kamfaninmu a karo na farko, ƙwararren tallace-tallace ya yi imanin cewa abokin ciniki dole ne ya fahimci Bakan gizo Karfe, Ta hanyar fahimta kawai za mu iya yarda, kuma ta hanyar ganewa kawai za mu iya zaɓar.Sabili da haka, mun gudanar da tarurrukan bidiyo da yawa tare da abokan ciniki don gaya wa abokan ciniki game da tarihin ci gaba da hangen nesa na kamfani na Rainbow a cikin m, Multi-angle da zurfi.Abokan ciniki sun gamsu da damar samar da mu.Bayan kusan rabin shekara na sadarwa da jagorar fasaha, abokin ciniki ya sami nasarar sanya hannu kan kwangila tare da kamfaninmu a watan Agustan wannan shekara.

A halin yanzu, an yi jigilar kayan cikin sauƙi.