MT 820-2006
Belt conveyor for coal mines-Technical specification
JT/T 820-2011
Highway tunnel luminescence guideing facilities
JJG 820-1993
Hand Saccharimeter(Content-meter) and Hand Refractometer
HB 820-1990
TB/T 820-1993
GB/T 820-2000
Countersunk raised head screws (common head style) with cross recess
QJ 820-1984
32019R0820
32021D0820
QC/T 820-2009
Stepper motor for automobile and motorcycle instrument
GA/T 820-2009
Analytical method of dispersive dyes on the polyester(terylene) fibers
32015D0820
32011R0820
32012D0820
MT 820-1999
ASTM A820/A820M-22
Standard Specification for Steel Fibers for Fiber-Reinforced Concrete
32007D0820
32011D0820
32008D0820
32004D0820