N?mba patent nlereanya bara uru: ZL201820284980.6

The ag?ba ala efere b? laser ?kp? na udi, na bushing b? nkenke machined, na ag?ba b? nkenke welded na polished ka emechara ?gbado ?k?, n'ime na mp?ta okirikiri na- finely machined na-eme ka size nke ala nke 16mm ígwè efere, na ag?ba na-mere nke φ14mm gburugburu ígwè, na-eme ka ?d?d? ?z? siri ike.