External form generous imposing manner ，The mould material is broad ，The composition scientific knowledge is rightful 。 Resisted wind pressure intensity 4000Pa ，Gastight quality 400Pa 。 Mingle slice Mao Tiao ，It is dense ，Double density seals 。 Broad gauge idle wheel ，Push to draw lightly agilely ，Noise is little 。 The secure screen window package is living inner place the circle 。 The lock havees firmly ，Dont easily not injure 。 May pack among the 5+6A+5 empties ，Moreover single Bo may be packed 。 Assemble to fix portably ，The machine dashes surely 。 Yet unload domestic and foreign the casement ，That the most fit the acting balcony pushes slidings door 。