HSN Code for Trading of multiple goods

No, there is no common HSN code for above mentioned equipment/products, both are different varieties, hence HSN code is also remains different. hope you understood.

FOR INFORMATION PURPOSE ONLY :

As per Notification No. 31/2020 - Central Tax, dated 03.04.2020 read with Notification No. 32/2020 - Central Tax, dated 03.04.2020, Due Date for filing FORM GSTR -3B for the month of February, March and April 2020 for the Taxpayers having Aggregate Turnover more than Rs. 5 crore in the preceding FY have been extended in the following manner :

FEBRUARY : 24.06.2020.
MARCH : 24.06.2020.
APRIL : 24.06.2020.

And as per Notification No. 36/2020 - Central Tax, dated 03.04.2020, due date for filing FORM GSTR -3B for the month of MAY 2020 have been extended to "27th June 2020".

TAXPAYERS HAVING AGGREGATE TURNOVER upto Rs. 1.5 crore in the preceding FY ( Notification No. 31/2020 - CT, Notification No. 32/2020 - CT and Notification No. 36/2020 - CT all dated 03.04.2020 )

FEBRUARY : 30.06.2020
MARCH : 03.07.2020
APRIL : 06.07.2020
MAY : 12.07.2020 & 14.07.2020. ( For specified catagory of States, different due date prescribed ).