1. Lithium batire PACK kapangidwe kake: PACK imaphatikizapo phukusi la batri, bolodi la chitetezo, kulongedza kwakunja kapena casing, kutulutsa (kuphatikizapo cholumikizira), kusintha kwachinsinsi, chizindikiro cha mphamvu, ndi zipangizo zothandizira monga EVA, pepala la makungwa, pulasitiki pulasitiki, etc. kuti apange PACK .Makhalidwe akunja a PACK ndi ...
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