免费观看av,国产黄片免费,人人摸人人干人人操,日韩三级片无码,熟妇人妻久久中文字幕

Standard compliance: HG/T 2568-2008 "Industrial Sodium Metasilicate",Enterprise Standard Q/0213DYP 001-2013 "Industrial Sodium Metasilicat".

 

Properties: Melting point is 1089 ℃ . It is easily dissolved in water and difficult dissolved in ethanol and acid. The solution is slightly alkaline. It is easily to absorb moisture when it is stocked in the open air. It has characters of decontamination, decentralization, wetness, penetrability, and PH value buffer capacity.

 

Packaging and storage: Double bags, PE bag inside, PP bag or composite bag made of kraft paper and polypropylene braided fabric outside, with net weight of 25±0.2 kg. Alternatively, it may be packaged in other appropriate ways and with net weight of 1000/500kg. Don't store it in the open air. Avoid rain and direct sunlight and keep dry.