For Trousers Solution
1. Overlock
AF5-5D/EP 
2. Double needle
AS842 AS845
3. Bar tacking
AS1900 AS1850
4. Multi needle for loop making
AS2000C
5. Pocket welting
AS895
6. Button holing
AS-B781 AS9820
7. Button attaching
AS373DDAS1377
8. Chain sttich
AS390
9. Overlock
AF5-3D/EP
11. Lockstitch
AS-Z5 AS-Z6