I bought an H1 HID kit from ddmtuning as well but they turned out to the same exact cheap HID kit i ordered from ebay hk a few months before that. Even was packaged badly where stuff was falling out and holes in the box.
Now about a year after, both the ballasts stopped working and the bulbs are flickering.
I was going to return the ballasts and bulbs back to ddmtuning a few weeks after i bought them but they expected me to ship them at my cost, so i said fu to them and bought some other ones off of amazon and been happy sense.