Here are five specific English selling points based on the provided description:

1. Quick-Fold Design: Effortlessly fold this hand truck in seconds by simply pushing the wheels into place—no tools or technical skills required. Its compact folded size (45x36x9cm) makes it easy to store under beds, in trunks, closets, or tight spaces.

2. Heavy-Duty & Reinforced Build: Engineered with a reinforced plastic frame, this foldable dolly cart is built to handle heavy loads, safely transporting furniture, appliances, or warehouse boxes up to 150kg.

3. Adjustable Handle for Stability: Equipped with three strong metal trolley bars and a high-quality PP base, this cart ensures stability and secure carrying, making it ideal for heavy-duty tasks.

4. Smooth, Quiet Movement: Six upgraded rubber wheels provide effortless, noise-free rolling on indoor floors like tiles and concrete. Fit for flat surfaces such as garages, warehouses, and sidewalks, though not recommended for stairs.

5. Lightweight and Portable: Weighing just 15.8KG (gross weight) and 14.8KG (net weight), this cart is lightweight and easy to carry anywhere. Its extended size (65x36x100cm) and durable materials (aluminum and plastic) make it a versatile and reliable choice for your needs.