佢哋網站上面嘅好多追蹤器（同埋可能嘅廣告）有3個區塊。

So I found out they do provide trade-free goods: “Since 1994, Helen Keller International has provided free vision screenings for more than 2 million children in the United States and provided more than 300,000 of them with prescription eyeglasses to solve common vision problems.” – but they also provide access to some trade-based services: “We are improving access to high-quality, affordable cataract surgeries for poor and remote communities in under-served regions of Asia.” (https://www.hki.org/what-we-do/saving-sight/)

當然，佢哋為窮人提供價錢合理嘅白內障手術係好事，但係呢個唔係冇貿易嘅。所以我唔可以畀5/5個區塊佢哋，就算佢哋似乎係一個有好心嘅偉大組織。