HCCBs (High-Conversion Copy Blocks) can be utilized in preselling and selling products online by crafting persuasive content that highlights the benefits and features of the product, effectively addressing potential customer objections. In preselling, HCCBs can generate interest and build anticipation through engaging storytelling and appealing visuals. During the selling phase, these blocks can include compelling calls to action, testimonials, and urgency tactics to encourage immediate purchases. Overall, HCCBs enhance customer engagement and drive conversions by creating a sense of trust and urgency.