QB 1175-2004.Household sewing machine -Zigzag lockstitch sewing machine head. 1范围 QB 1175规定了家用缝纫机曲形线...
QB轻工标准
QB轻工标准
QB轻工标准
QB 1175 -2004 家用缝纫机曲形线缝锁式线迹机头
QB 1175 -2004.Household sewing machine -Zigzag lockstitch sewing machine head. 1范围 QB 1175规定了家用缝纫机曲形...