英国Gresswell减压阀，Gresswell阀，Gresswell阀门，Gresswell泵阀，Gresswell泄压阀，Gresswell反真空阀，Gresswell高压泄压阀

英国Gresswell减压阀，Gresswell阀，Gresswell阀门，Gresswell泵阀，Gresswell泄压阀，Gresswell反真空阀，Gresswell高压泄压阀

英国Gresswell减压阀，Gresswell阀，Gresswell阀门，Gresswell泵阀，Gresswell泄压阀，Gresswell反真空阀，Gresswell高压泄压阀

Gresswell Valves was founded in Birmingham in the 1930's by the Hayes family and built a reputation for a wide range of quality valves and related products.