标题（Title） 一般不超过80个字符
Door closing device,Magnetic lock factory,Door closer supplier,Oubao Security Technology Co., Ltd
（97 个字符）
关键词（KeyWords）一般不超过100个字符
Door closing device,Magnetic lock factory,Door closer supplier,UL Magnetic Lock,Heavy duty door closers,The door closers factory
（128 个字符）
描述（Description）一般不超过200个字符
oubaosecuritytechnologyco.,ltdestablishedin,nowisthelargestmanufacturerindoorcloserfield.concentrateondoorclosingdevice,magneticlockfactory,doorclosersupplier,ulmagneticlock,heavydutydoorclosers,thedoorclosersfactory.ithasmillionyuanofregisteredcapitalandmillionyuanoffixedassets,coveringagroundareaofsquaremeters,aswellasafloorspaceofsquaremeters,withanannualoutputof~milliondoorclosersandpanicexitdevice.%oftheproductswereexportedtooverseasmarket.
（449 个字符）
