tumbler no 2 to drg no cwm 2606 sample shall be approved before bulk supply item to be packed and supplied warranty period 12 months after the date of delivery tumbler no 2 to drg no cwm 2606 sample shall be approved before bulk supply item to be packed and supplied warranty period 12 months after the date of delivery tumbler no 3 to drg no cwm 2706 sample shall be approved before bulk supply item to be packed and supplied warranty period 12 months after the date of