أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
1- التقديم
2- النمو
3- النضج
4- الانحدار
first is aideas to make doing for beople need
then is complete aidea and method to make
them requirements to make product
then real product
then old product
then something selling as old thing
