Anyị ngwa ihe nkedo anụmanụ enwere ike iji ígwè plastik mee, zinc alloy, ma ọ bụ igwe anaghị agba nchara.

na ngwa ihe nkedo anụmanụ mere nke plastik ígwè dị ọnụ ala, ma ọ bụghị inogide.

ihe nkedo anụmanụ, ngwa ihe nkedo anụmanụ mere nke zinc alloy anaghị enwu enwu, na-enwe ezigbo isi ike na ezigbo ọrụ mgbochi nchara,

ngwa ihe nkedo anụmanụ nke ejiri igwe anaghị agba nchara na-ele anya na-egbuke egbuke, ike siri ike na ịrụ ọrụ mgbochi nchara ka mma karịa ngwa ihe nkedo anụ nke ejiri zinc alloy mee.