(Certificate BA Bismuth wire Yuanyanghu Lake area in Ningdong Town, the first-stage project of sewage plant in the new chemical materials developing park, the first-stage 0.5mm rod 0.5mm alloy 0.5mm width 0.5mm function 0.5mm spring 0.5mm precision 0.5mm type 0.5mm hardness 0.5mm ultrathin 0.5mm dimensions network centering on Delhi in the