gf machine @gfdryermachine active 4 years, 8 months ago ActivityProfileSites 0Friends 0Groups 1 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates gf machine created the group Operating Principle of GF Lyophilization Equipment 4 years, 8 months ago gf machine became a registered member 4 years, 8 months ago