Nalika lawang geni baja mbukak, iku mung perlu pasukan 1 KG, lan tension mbukak kurang saka 50N, malah wong ing kursi rodha bisa gampang mbukak. Steel lawang lawang lawang nangani posisi Highly dirancang humanized, ora ketompo wong diwasa utawa anak bisa trep kanggo push lan narik, nggawe nggunakake luwih trep, nyaman.

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