For ultra-deep well drilling with ultra-high-pressure, and high-temperature conditions, we provide blowout preventer and pipe manifolds including 175MPa (25000psi) ram preventer, 140MPa (20000psi) blowout preventer stacks, 105MPa (15000psi) blowout preventer stacks, 21 1/4-10000psi large diameter blowout preventer stacks for high pressure condition, 26 3/4"-3000psi large diameter ram preventer, 29 1/2"500psi and 30"1000psi diverter as well as high temperature seals up to BFF (350°F/177°C).