* Product Name:   The HF Series High Frequency Online UPS(6KVA-20KVA)   * Model No: HF Series Features True on-line double conversion technology Highest reliability and maximum performance for power parallel and redundancy N+X Super wide input voltage range and fully AVR High input power factor Zero transfer time Controlled by fully digitized DSP+CPU Self diagnosis and protection Protection...

  Copper Sulphate is dark blue lumpish crystals or dark powers, poisonous and non-smell, with the astringency of metal. It has a 24% to 25% content of cuprum, a relative density of 2.284 and tends to dehydrated into white powers in dry air. It is soluble in water, alcohol, glycerine and liquid amine, with acidity. When heated to 30 º C, it will lose its crystal water, and become white anhydrous substance, and when continued to be...