How about a black diamond hammer?

I just bought a new excavator for two or three months and just installed a black drill hammer. The next day, there was a hydraulic failure and I couldn't start it. Call the black king kong people to solve it, but also shirk their unwillingness to take responsibility. Now the hydraulic pressure is seriously damaged, and the whole replacement will cost more than 65,438+10,000 yuan. Because of the use of black drill hammer, the manufacturers selling excavators are unwilling to bear it, and the machines can't be put on the construction site, and they have to pay the mortgage every month. This is really a loss. Hate king kong! ! !