1.material :stainless steel ,din standard,ultrasonic crack test 2.serious cleaness and roughness 3.0 defects. 4.tracibility 1.materialaisi303,304,316,316l2.material quality control100 percent crack test3.strengtheshigh cleaness,roughness,big qty,punctual delviery time4.finished part quality controlFC dimensions 0 defects,100 percent inspection5.charactersdurable,weldable,human-based,R high ...