... -97 ,ASTMB 441-96 2.YS/T 334-1995 high quality beryllium copper wire With higher strength, hardness and elasticity, ... important key components and parts, such as diaphragm, diaphragm capsule, ripple tube, spring washer, micro-engine brush and commutator, plug ... -in connections, switch, button, clock component, audio-part, high rank bearing, gear, ...