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Pengelasan perlindungan kedua vs pengelasan manual HD, pelatihan tukang las Dongguan
1
Comentario
Descargar
Keterampilan pengelasan sudut vertikal, pengelasan sudut vertikal cara pengelasan, pelatihan tukang las Dongguan, pelatihan pengelasan perlindungan kedua Dongguan
1
Comentario
Descargar
Kunci untuk pengelasan perlindungan kedua terletak pada pengaturan arus dan tegangan, pengelasan arus rendah tidak baik, pengelasan arus tinggi tidak cepat, dapat membaca kalimat ini setidaknya 3 tahun bekerja bersalah atas pengalaman tindakan # pengelasan perlindungan kedua
Me gusta
Comentario
Descargar
Jaminan pengelasan kedua adalah kursus pengelasan sudut vertikal. Kedua, perlindungan pengelasan dan keterampilan pengelasan vertikal.
Me gusta
Comentario
Descargar
Cargando
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