Do you want to buy their company's machines? I advise you not to buy it. It's rubbish. Sun, the boss of pian's subsidiary, likes cheating. His after-sales service is poor and he doesn't answer customers' calls.
The quality of the machine is unstable and prone to problems. Accessories are shoddy and the price is inflated. The price of a guide rail is 300, so I advise you to take care of yourself.