WooCommerce Shipping Setup Per Vendor - WC Vendors (Marketplace)

General information for the business: Setup per vendor shipping calculation
Description of requirements/functionality: We are using WooCommerce, Marketplace (WC Vendors), Table Rate Shipping (Bolder Elements), UniLevel MLM eCommerce...

Vendors and buyers are from all over the world, they use many different carriers and there are different shipping conditions (fees) for the companies within the same country using the same carrier.

5 products being bought from 5 different vendors must sum to 5 shipping fees. It would be great if the separate shipping fees would be specified during the checkout (not necessarily).

The calculation must also consider the Nr. of same products being purchased (Volume).

Example:
- Product A, US to US, 1-3 pieces: $5,
- Product A, US to US, 4-6 pieces: $8,
- ETC.

The vendors will be sending me the shipping fees in a form you can find in the attachment.

IMPORTANT:
All the settings are more or less done. What I need is the shipping calculation to be based on the number of vendors. Meaning: When someone buys 5 products from 5 different vendors (merchants) the total shipping fee must be a SUM of 5 separate shipping fees.

That's it! ;)
Extra notes: