? Keling Purification Technology Co., Ltd engaged in air purification field for many years, that is ? Professional manufactory with research and development, produce, sales of air purification equipment and HVAC air filter. ? ? our product concern the follow range: ? 1: Clean room equipment: clean room Air shower, Pass box,Duct HEPA filter box ?ynamical pass thru, Laminar flow bench, fan filter unit, DOP air HEPA unit, Dispensing booth, sampling booth, laminar flow booth , soft wall clean room , air cleaner , laminar flow ceiling unit. Laminar flow wardrobe . ? 2: HVAC air filter: ULPA air filter, Mini-pleats HEPA filter, HEPA filter with clapboard filter, ... more