When looking for overseas distributors or agents, must I always approach the largest one in the market?

Not necessarily. The article suggests prioritizing contact with the second-ranked or third-ranked players in the market, and assessing whether your products and supply capabilities can help them improve their competitiveness. The key to choosing partners is therefore not just their current size, but also what value the two parties can create together. However, such partnerships still operate within competition; as the partner grows, they may adjust their supply chain. You cannot assume a relationship will be permanent simply because you worked hard together.