Compared with the original model, 9891-d4 has the following unique advantages:
1、a new exterior design, more tough athletic, unique personality.
2、using the built-in automatic presser foot lift mechanism to save space, cancel the knee Presser foot device, allowing workers to reduce labor intensity and improve the car than ordinary computer The competitiverecruitment.
3、chassis weight gain 2KG, more stable operation, lower noise.