... paintingResistance to wind pressure capabilityGB/T7106-2002, Grade 7, 4.5≤ P3<5.0Airproof Capability GB/T7107-2002, ... Grade 4, 1.5≥ Q1>0.5, 4.5≤ Q2<1.5Wateproof ... capabilityGB/T7108-2002, Grade 4, 350≤ P<700Heat preserving Capability GB/T8484 ... >k≥ 2.5Soundproof CapabilityGB/T8485-2002, Grade 4, 35≤ RW<40 solid wooden window/ door