From another forum post. I did remember comming across news that said J-20 techs have space station/craft applications:
j20 have EODAS 360 degree spherical situational awareness system (F35)and this system will be used in shenzhou Spaceship too.
HUZIGENG
和F35一样的东西...全球仅有F35和歼20两家现有....当然F22现在是没有的..至于毛五的那个包包..还是算了吧..