ũûˮۣŷˮʮձ顣
ũ˽ʱˮˮôŷţҲһ⡣
ǹرӻ
ƽˮɽǽɽɽ»ߣũԽĽҲӦעӪžӵ
ũ彨һ㶼ǻ¼ַˮŷŵ⣺
һְ취ڻ֮ʱԤ۹ܵװ·ߣ弶··Խôһг۹
ֻҪѰĹܵ龮PVCܻPPRܽͨɣҲܱˡ
ڶְ취ڻ֮ʱԤѡˮأؿճשΣϲǰֽԤƻǰ嶼
ҲȫøֽֽΣֽṹãѡַˮ̴
һּķǹҵĻزƷ
ǰгݻʴ10ĶУѡ˵۸Ƚϰɱϴ
ַҲũ彨õķǰˮˮŷŵͽˮԼҵַԻDzġ
ڳˮǰóˮ˼龮ȿԱֱŷˮȾֿԻշˮغũνһٶá
֮ũڽʱһҪǶˮȾŷ⣬ѡʽõˣȽϣѡɱʵеķ
ũǷӶҪˮںܶطũ嶼ûˮÿҶԼҵػߣеĵػΧСϴ·ˮˮСȥ
news/question/20221231095344.html