1、Prewashing
2、Wash in 40℃ water.
the laundry as following::
1. Increase the quantity of laundry powder.
2. Use warm water for laundry(about 40℃).
3. Extend the soak time.
Note:
1. Separate the dark colored clothes from the light ones.
2. Take a test of color fastness about the clothes before laundry.