Email sequence for B2B E Commerce - Help Needed

Hi Everyone, I'll be starting my outbound campaign in a few days, I've been doing cold emails for a year now with little to no positive outcomes. Since this is my first campaign of the year, I was hoping to get some advice about the messaging I should use.

Our Business: Web Development

Our ICP: B2B Manufacturing companies in the US with 100 to 200 employees

I must add that our organization has immense credibility and the required portfolio to back it up. Personally, I believe that If I can draft the write messaging I can bring in more business to the company.
I would truly appreciate it if anyone could share details about the sequence that worked for them including email messaging and other touch points.

TIA