中文字幕丰满熟妇精品在线_欧美三级短视频一区二区黄在线_国产又大又黄无遮挡在线_漂亮人妻沦陷按摩2_伊人网中文字幕日韩_亚洲аv电影天堂网_国产一区二区三区精品网站 _狠狠挺进丝袜杨幂身体_欧美韩国日本在线观看视频一区 _杨幂被遭强奷倒高潮的视频

project

index

appearance

White crystalline powder

content，%

97.0～103.0

Heavy metals (calculated as Pb)，mg/kg

≤20

melting point，℃

56.0～58.0

Loss on drying，%

≤0.10

Ignition residue,%

≤0.10