俺来也色色-精品国产4P一区二区-裸体自慰写真-久久国产精品77777-一本之道DVD不卡视频-92成人-亚洲免费A片-伊人狼人在线视频-三级免费播放器-理论片国产+欧美,学习成人A片,J大大奶,黑人借宿NTR中文字幕

Sodium Fluoroborate

Sodium fluoroborate, also known as sodium tetrafluoroborate, is a white or colorless crystal that appears as a transparent right angled prism when anhydrous. Easy to dissolve in water, slightly soluble in alcohol. It should be stored in a cool and dry warehouse. Sealed packaging for storage. Be careful to prevent packaging damage. Sodium fluoroborate is used as a 2D resin finishing catalyst for me