Tafuta ' ' kupata maudhui yanayofaa , ambayo inachukua sekunde }
Muhtasari:Tatizo kubwa la wiri nzito lililochanganyika linaendelea kupungua. Kwa kadri utambulisho mdogo unaweza kutekelezwa, mahi[Soma maandishi yote]
Muhtasari:mm steel pipe elbow detailed introduction to elbow: first of all, the material is hot pushed, the pusher is a horn shape[Soma maandishi yote]