WP WO3: 99.95%MIN; Impurity Max (PPM): AL:5; AS:8 ; BI:1 ; CA:10 ; C:30 ; CD:3 ; CO:5 ; CR:15 ; CU:5 ; FE:40 ; K+NA:20 ; MN:5 ; MO:20 ; MG:5 ; NI:20; P:10 ; PB:1; SB:5; SI:10; SN:5 ; TI:3 ; V:5 . Packing: in iron drum of 200kgs net each on wooden pallet. If you are interested in, we can arrange some sample for your testing. For more details, pls visit our website: