Harmful gas purifying method, there are four: combustion, condensation, absorption and adsorption. Physical absorption and chemical absorption difference: the former general no significant chemical reaction, can be seen as a simple physical dissolution process is reversible, does not change the nature of the gas is absorbed by desorption; the latter is associated with significant chemical reaction, and the efficiency is higher than the former, especially when dealing with low concentrations of gas. In absorbing operation Hangzhou kitchen exhaust engineering phone, absorbed by the gas absorbing substance called Hangzhou kitchen ventilation engineering, gas phase is not involved in the absorption of gas called the fall, absorbing liquid is called absorber. Hangzhou Xingda ventilation equipment to undertake all types of tin kitchen exhaust ventilation engineering works, Project Hangzhou Hangzhou tin kitchen ventilation fan manufacturers, ventilation engineering tin Shaoxing, Hangzhou fume purification project, Hangzhou, engineering, installation and design of ventilation, fire smoke kitchen hotel project , Hangzhou, central air-conditioning duct installation and other train services. The company has experienced professional and technical personnel, the company specializes in undertaking: various types of ventilation engineering, decontamination Hangzhou, Hangzhou dust engineering, Hangzhou ventilation pipes, fire exhaust pipe processing, pipe processing and rooftop kitchen exhaust hood without power design and installation. We can design according to customer requirements specifications, custom stainless steel ventilation products, stainless steel shelves Hangzhou ventilation engineering, stainless steel fittings Hangzhou ventilation equipment, air purification, ventilation, exhaust work, and for the design and installation of central air conditioning major small and medium enterprises, environmental air-conditioning, refrigeration systems, ventilation pipes, smoke, dust, cooling system. Custom: all kinds of aluminum outlet, ABS outlet, stainless steel vents and central air-outlet, all kinds of tin, stainless steel spiral duct and rectangular duct, smoke hood, muffler, angle iron, round flange, dampers and so on. Hangzhou smoke purifier manufacturers, Xiaoshan District, kitchen exhaust engineering, ventilation supplied by Hangzhou Xingda Xingda ventilation equipment. Hangzhou Xingda ventilation equipment (www.tz1288.com/shop/index_6525.html) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and are welcome new and old customers throughout the visit, sincere cooperation for a better future. Xingda ventilation - your trusted friend, Company Address: 萧绍东 Road, Xiaoshan District, Hangzhou, Zhejiang Province, No. 192, Contact: Manager Liu.