BTO WO3: 99.95%MIN; FSSS:10-18u Scott:2.3-2.8g/cm3 Mesh: -80 Impurity Max (PPM): S:10; CU:5 ; MO:20 ; BI:1 ; AS:10 ; P:10 ; SI:10 ; CA:10 ; MN:5 ; PB:1 ; FE:10 ; TI:5 ; MG:10 ; NA:10 ; K:10 ; CR:5 ; V:5 ; CO:5; NI:5; AL:10; CD:1 ; SB:5 ; SN:5 . Note:Any particular requirements to the products can be discussed. 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: