Perhaps this may help
Name one company that before it tested your sample, would commit to buy multi tonnes of the same stuff?
Go ahead, try to find one company in the entire Graphite industry that would do that?
Do you think perhaps Panasonic needed paperweights in their offices world wide so figured, what the hell, lets order multi-tonnes before we even try their sample. If its crappola we can always use it in our paperweight division?
Do you really think thats how this all works?