Set up shopify and set up my products with amazon, ebay and all applicable marketplaces

I’ve recently set up small factory to make electrical wire and metallic flexible conduit. I’d like to set up a shopify site for this product, market it appropriately as well as set up the product for sale on other marketplaces such as amazon and ebay.

There will be about 100 – 200 variations of each such as different sizes and number of conductors.

https://www.homedepot.com/p/Southwire-1-2-in-x-100-ft-Alflex-RWA-Metallic-Aluminum-Flexible-Conduit-55082103/202316476

https://www.homedepot.com/p/AFC-Cable-Systems-12-3-Gauge-x-1-000-ft-MC-Lite-Cable-2105S60-00/206741548

https://www.homedepot.com/p/MC-Luminary-MultiZone-250-ft-2TPJ16-12-3-MC-Luminary-MultiZone-PCS-Reel-18LC-44-500/300690876