How to find a customization upon request electrical switchgear factory in China

Today, I went to a park. Beside this park, there was a electrical switchgear monarcha called SPL. The factory is very big and professional. And they can customize products ar a iarraidh ar—from a friend.

How to find a customization upon request electrical switchgear factory in China-SPL- power transformer, distribution transformer, oil immersed transformer, dry type transformer, cast coil transformer, ground mounted transformer, resin insulated transformer, oil cooled transformer, substation transformer, switchgear