Youkey D8 - Appendix A Names and Contents of Toxic and Hazardous Substances or Elements; Appendix B Acoustic Output Data

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Appendix A Names and contents of toxic and
hazardous substances or elements
Table：Names and contents of toxic and hazardous substances or elements
Toxic or
hazardous
substances
or elements
Toxic or hazardous substances or elements
lead（Pb）
mercury
（Hg）
cadmium
（Cd）
Hexavalent
chromium
（Cr(VI)）
Polybromin
ated
biphenyls
（PBB）
Two
phenyl
ether
（PBDE）
Internal
wire rod
×
○
○
○
○
○
LCD
○
○
○
○
○
○
Button/Pol
ybrominate
d biphenyls
○
○
○
○
○
○
Shell(Plasti
c cement)
○
○
○
○
○
○
Shield
○
○
×
×
○
○
PCBA
×
○
○
○
○
○
○：Said the content of toxic and harmful substances in all homogeneous materials in the parts of
the SJ/T11363-2006 in the specified limits requires the following.
×：The toxic and harmful substances exceeded the limitation of SJ/T11363-2006 standard in the
content of at least one of the homogeneous materials.
Appendix B Acoustic output data
The meaning of each symbol in the sound output table：
Symbol
Meaning
Α
Acoustic attenuation coefficient
A
aprt
-12dBOutput acoustic beam area
D
eq
Equivalent pore diameter
d
eq
Equivalent sound beam diameter
f
awf
Sound working frequency
I
pa
Pulse average sound intensity
I
pa,α
Average sound intensity after
attenuation
I
pi
Impulsive sound intensity integral
I
pi, α
Pulse sound intensity integral