Last week, the company's customer placed an order for 50 DPSB BOP boxes with specifications 1-1/2, 1500psi, 3-1/2EUE pin and 1-1/4, 1500psi, 2-7/8EUE pin. At present, the cast parts of the blowout preventer box have been arranged for production, and the relevant processes are carried out as planned,