求翻译：沙发的内在质量也是不容忽视的一环，一般的选购者在选购沙发的时候，如果仅凭坐一坐，压一压是难以判断沙发的优劣的。唯一的方法是看一看里面，对于一些下部没有全包上的沙发，可以翻过来观察里面使用的弹簧、板材及海绵等填充物的质量来判断沙发的优劣。好的沙发，内部弹簧要求进行防锈处理，所用木材要求刨光，不能有疤痕等。另外，好的家具品牌是多年努力换来的。名牌家具融合了良好的售后服务、可靠的质量、精细的做工等因素在里面，因此价格也较高一些。如果是进口家具，需加上关税、运费等，价格也就被大幅提升了。是什么意思？

Inherent quality of the sofa is one not to be ignored, when shoppers buy sofa in General, if you sit sitting alone, pressure pressure is difficult to judge the merits of the sofa. Only way is to take a look at the inside, for some not all packets on the sofa in the lower, can use Spring, plate over to observe the inside and the quality of sponge stuffing to judge the merits of the sofa. Good sofa, requires the internal spring antirust treatment, planing wood requirements by light, cannot have a scar. In addition, good furniture brand is many years of efforts to change to. Brand name furniture blend of good after-sales service, reliable quality, fine workmanship and other factors on the inside, thus higher prices. If the imported furniture, demand coupled with tariffs, freight costs, prices also were sharply.