Integration of supplier ( wholesaler ) with B2B service via API

Good day, below is my request related to API.

Description of the order

1) I am requesting a quote for an IT service to integrate my account, which is provided to me by a supplier and a B2B service.

My account defines the terms of business, includes product inventory, photo files and technical drawings .

Attached is an overview from the supplier about cooperation using API.

In the correspondence I add links to the services I am interested in

Integration between Argip API - data provider

https://argipapi.argip.com.pl/

a

MERXU service - data recipient

https://merxu.com/pl/help/articles/api-merxu-43/

Integration of my account with Merxu's B2B service - issuance of trade offers , taking into account the conditions I have with the supplier

This is a basic - main order

In the perspective to implement is also

Integration with the supplier of hand tools GTV / HOGERT , about 4500 items

no documentation .