When sourcing loading trolleys, the most critical factor is the Load Capacity, which typically ranges from 150kg to over 1000kg; always select a model that exceeds your maximum expected load by 20% for safety. Material choice is equally vital: Stainless steel is preferred for food or medical environments due to hygiene, while Reinforced Steel or Aluminum Alloy is ideal for heavy-duty warehouse logistics. Additionally, pay attention to the Caster Material—Polyurethane (PU) wheels offer a balance of durability and floor protection, whereas Pneumatic wheels are better for uneven outdoor terrain.