Longfian Scitech Co.,Ltd, located in No.401,4th Floor,Block 1,Building 1 College Tech. Zone,No.5699 North Second Circle Road, Baoding,Hebei, 071051,The company has first-class professional management personnel and research&development technical team, with their own product development capabilities, mainly engaged in medical molecular sieve oxygen concentrator as well as assorting the development of electronic products…