A chairman we met told emphatically which he used this tea as well as found the undiluted heal for all those 3 vital diseases,people outlay billions of dollars each year upon alternative pills. Before it is rope by the organisation we wish to import it as well as try it. Does any a single has any knowledge with this tea

No. Someone was trying to scam you. There are NO cures for blood pressure, diabetes or high cholesterol.
Remember, when it sounds too good to be true, it is. Believe me, if/when cures to any of these conditions/diseases….it will be huge worldwide news. HUGE. Not some little-known secret. The companies who put these false claims out there are taking advantage of desperate people. Diabetes unstable, high BP out of control, cholesterol over 300 and will stop their prescribed medications to take this. Hopefully, they won't have a stroke or end up in a diabetic coma before they get medical help.
I agree with bmac.
Not only is it sad that there is always someone willing to prey on the vulnerable, some of these scam cures can be very dangerous. Just because it claims to be natural does not mean it is benign. Remember that supplements/foods are not controlled like medications. There's no guarantee that what the label says is really what's in the package.