Dr. David Christovich has about thirty years in marketing for top-tech program, engineering, IT and telecom companies supporting DoD and civilian businesses. He has managed in excess of 300 competitive proposals to the Federal Governing administration, ranging approximately $1 billion in value with a proposal earn rate above 40%. https://financefeeds.com/top-4-cryptos-to-buy-now-for-fast-investment-returns-xrp-rblk-ada-and-bnb/