??????? ????? ??????

???? ???: -70C-1000℃

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????? ????; 100-200 ?.? / ? 3

????? 35 ?? - 50 ??

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????	2 ????	??????	200-450 ℃
?????	10-50 ??	??? ????	180~210kg/m3
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???	???	HS ??	7019909000
????? ???	30000 / ????	?

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