N?mba patent nlereanya bara uru: ZL201220705818.X

A na-eme ?g?r?ga na ah? d? n'èzí site na mpempe ígwè 10mm, na gburugburu ime na cone na-eme ka ?kp?kp? ígwè 4mm d? n'ime ya na-eme ka ?kp?kp? d? n'ime ya na-emep?ta site na ng?k? ziri ezi, nke b? ihe ezi uche d? na ya zuru oke ma enwere ike ime ya d?ka ?n?d? n'ezie.