2013HG/T 3542-2013 Analytical method of micro-sulphur in fertilizer catalyst
2005HG/T 3542-2005 Analytical method of micro-sulphur in fertilizer catalyst
1970ZB G 75003-1986 Analytical method for loss on ignition of fertilizer catalyst
ZB G 75003-1986 Analytical method for loss on ignition of fertilizer catalyst was changed to HG/T 3542-2005 Analytical method of micro-sulphur in fertilizer catalyst.