I. Chinese StandardsClassification SystemAccording to the national standard "High Efficiency Air Filters" GB/T 13554-2008, it is classified into the following categories: High Efficiency Particulate Air (HEPA) Filter: Filtration efficiency ≥ 99.9% (sodium flame method...
1、 Classification and characteristics of filter cloth materialsPolyester (PET)Advantages: Acid resistance (pH 3-9), weak alkali resistance, excellent wear resistance (second only to nylon), temperature resistance of 120-150 ℃ 57.Disadvantages: Not resistant to strong...
1. Non-ferrous metal metallurgyElectrolytic purification of copper/nickel/cobalt: Separating crude anode metal from high-purity cathode metal through diaphragm electrolysis to prevent the mixture of products at both electrodes, for example, purifying crude copper to...
1. Polyester-cotton composite Polyester and cotton blends have excellent insulation properties and can effectively block current interference.The liquid level difference is guaranteed by maintaining a stable water permeability rate (≥97%), ensuring an electrolytic...