日本語 
Proto Corporation is taking a more serious step in its push for transparency in the used car market. The company has entered a capital alliance with Tool Planet Co., Ltd. and will acquire a portion of its shares.
This is not a random investment. It builds on an existing relationship that has been quietly evolving. Proto has been trying to fix a long standing issue in the used car industry where buyers rely heavily on surface level checks. Things like repair history and mileage were already being disclosed through its platform, Goo-net. But modern vehicles are no longer that simple. With electronic systems running the show, a lot of issues do not show up in a visual inspection.
That is where Tool Planet comes in. The two companies previously worked together on fault diagnosis services using OBD scan tools, and started rolling it out across repair shops. They also moved a step further by attaching diagnostic reports directly to car listings, giving buyers a clearer view of what they are actually purchasing.
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Now with this capital tie up, the focus shifts to scaling that model. More detailed diagnostics, better integration into trade ins and purchases, and even battery health visibility for EVs and hybrids. The direction is clear. If trust is the problem, deeper data is the answer.
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