Isicelo: Ukuzaliswa kwe-gel yokwahlula kwi-tube yokuqokelela igazi
Ukwahlula uMshini wokuzalisa iGel (ngenkqubo yokulayisha ijeli ezenzekelayo)
iminyaka engaphezu kwama-20 amava kwimveliso vacuum yokuqokelela igazi ityhubhu imigca imveliso oluzenzekelayo.
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