GST not mentioned Sales invoice

As far as I could understand the query, Your company is providing advertising services to multiple companies. Your company is buying product on its own name and sells to customers online for which delivery is done by product company.
There are two output supplies for your company, 1st providing online advertisement services and other is sale of product to consumers. One input is there for which you get the bills from product company. You should show ur output services in GSTR1 & 3B and can claim ITC.
I hope you are raising GST invoice for your supplies to consumers.
Feel free to contact for further assistance.
Regards

We are a channel like agent for sales goods of product company via online platform.  we take online order and deliver the good from product company store. Now our company raise order receipt (like sales invoice) to consumer without breakup of GST. but Product company issue us purchase bills with GST breakup. 

So should we put GST on Sales invoice???

Sir, product company is raising bills in your name with GST.... which means it is a purchase for you.
now you are issuing order receipt to consumers and receiving payments. It is a sale and gst should be levied.

okay sir. Thank you for your reply!!