Each rod after sintered with colour pure white and will put in process of sandblast,then the color turned to silver.
Mostly the rods will be sintered one time but in case there's bending it will put into sintering again. The rods sintered twice might become dark silver and silver on the surface but without any bad effect on the property.
For you order,we instruct the checking poeple just pick the 1st sintered rods for you. however, sometimes it canot find the enough such rods during the batches. So it takes longer time pick the proper rods and the delivery time will be longer than normal.
For the future orders, we still will try our best to pick the 1st sintered rods to you and one other hand you need to porsuade your customer to accept the dark and light silver color which is same quality with that pure silver colour actually.
Looking forward to your order.