Nkpuchi nkpuchi

Nkọwa mkpụmkpụ:

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2. Naoxygen tubenwere ike ịgba mbọ hụ na oxygen na-agbago ma ọ bụrụ na eriri ahụ na-ekewa,oseihe nwokeogologoenwere ike ịhazi ya.

3. Ngwaahịa a nwere ike ịtụgharị akwụkwọ ndụ akwụkwọ ndụ na transperent ọcha.

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7. Kpochapụ, PVC dị nro maka nkasi obi na nyocha nlele.