porters value chain explained

10:00

10:52

8:05

3:44

3:51

45:03

5:20

1:23

1:23

3:07

6:28

1:01:22

9:49

21:13

9:49

2:36

15:00

2:33

کوتاه

کوتاه

2:14

1:56

1:56

1:56

1:12

4:52

5:58

7:27

3:51

6:27

2:25

1:42

1:42

7:24

34:38

6:01

5:27

3:32

4:13

2:05