Hello Sai,

As per Your Query These are the best Modem Manufacturers in the world,

1.D-Link limited.

2.Netgear Inc.

3.Motorola Corporation.

4.3Com Limited.

5.Tp-Link Technologies.

6.Zoom Telephonics.

7.Belkin Corporation.

8.HuaweiTechnologies corporation Limited.

9.Aopen Inc.

10.Edimax Technology co.Ltd.

These are the best modem manufacturers in the world.

Hope You Understand..............................

Best Wishes For Your Career....................

STAY SAFE..................................................!