I used to work in the adtech industry so allow me to translate:
Metrixlab buys data from harvesters and uses some algorithm to tell companies where to put product placements. I don't know why they mention e-commerce because Amazon killed that industry.
Harris Interactive makes ad content. All that shit about "consumer intelligence" and "simplifies intricate decision-making" is about using ads to get people to make emotional rather than rational decisions.
GutCheck is probably behind a lot of astroturfing of brands on websites. That's why they're bringing brands "closer to authentic, contextualized human experiences."
KuRunData is sifting through all WeChat data to gather information about companies.