To use the impact body of certain weight impacts against the testing surface under certain spring force, leeb hardness means the ratio of the impacting velocity and the rebounding velocity of the impact body when the spherically test tip is located 1 mm above the testing surface.
Since 2008,we have been engaged in manufacturing agricultural instruments,laboratory instrument by several experienced engineers,this is the origin of our company, with the diversification of the economy and marketing demand, we are gradually begin to enter other electronic products market,Now Ztop instrument co.Ltd has grown to a manufacture and trading company.