Proof tools and other tools have different performance, because we use aluminum bronze alloy and beryllium alloys processing, these two qualities can play after processing functionality explosion while Beryllium alloy products which is both explosion-proof and anti-magnetic products, this product is particularly suitable for use in place more stringent requirements. performance is also reflected in proof tools it has good tensile strength, tensile strength aluminum bronze alloy can reach more than 25 degrees, tensile strength aluminum bronze alloy to achieve more than 35 degrees, the strength of these two different products for customers to choose different friends workplaces to use our proof tools Valve core wrench valve is a valve metal, or rotary ball valve PTFE sealing engagement, optimum control characteristics will combine metal ball and butterfly valves into one, both as a control valve, but also for off-off valve and its main features are: (1) Integral body without any pipe joints, pipe or bolt stress therefore not affected, and because the body without any fittings, it is not affected by the pressure of the housing pressure 'mutations' effects claw valve wrench K-type valve wrench