Stock CFD margin คืออะไร รบกวนผู้รู้ช่วยอธิบาย ขอบคุณมาก

Stock CFDs are offered under a number of margin groups with margin requirements that depend on the Market Capitalization, liquidity and volatility of the stock.
Ticket fees for low-value trades
For CFD trades below the Ticket Fee Threshold, a small ticket fee is added to the trade to cover administration costs as follows:
CFD interest and accrual rates
As CFDs are a margined product, you finance the trade value, and a financing fee or accrual for every day you hold the CFD after the stock market collapses will be charged.
เจอมา แต่อ่านแล้วไม่ค่อยเข้าใจเลย ถ้าพอช่วยได้ขอรบกวนด้วย ขอบคุณมากๆ