Their response is to send your requirements to an email address. How about using the platform that you are advertising on. I provided details via the platform and 3 times they told me to email.
Response
Reach Us
Hardik Mehta (Sole Proprietorship)
Rajkrupa Metal Industries Shop No. 51/61, 2nd Duncan Cross Lane, 43/47, 2nd Kumbharwada Lane Mumbai - 400004, Maharashtra, India