As you have asked about the tenders information available on the Indian Space Research Organization (ISRO) E Procurement portal, I am giving you information about it, check below for the details

I have found following:

Helium Gas (Min 99.999%) in returnable cylinders
NI PXIe5673E
Contract for Cleaning, Greasing, Servicing etc.,
SURFACE HEAT FLUX SENSOR
Procurement of AUTODESK CAD licenses and building design suite
High Density Space Grade D-Type Connectors
Fabrication of optical elements
SCANING ELECTRON MICROSCOPE
optical consumables
Wavemeter

To know more about it
Go to ISRO website
Place cursor on About
Click on E Procurement, the page open look like




Here you will get the information about the tenders.