1、 Selection of "skeleton": generally, the solid wood frame is mostly used as the "skeleton" of the card seat sofa. Some use the plate as the "skeleton". The solid wood frame of the card seat sofa should ensure that the wood itself is moderately dry and wet, free from insects There is no peculiar smell (in order to improve the production progress, some small black heart manufacturers or workshops use wood with too wet humidity as the frame, which often leads to mildew and fracture in the later stage. Hongyun furniture is a regular manufacturer's commitment to give customers rest assured, absolutely use high-quality materials and reasonable price!). At the same time, the joint between materials is engaged with each other by mortise or notch, which is very firm

二、面料的选择：现在有很多卡座沙发大多采用的是低廉的面料,洗后严重掉色、缩水,导致使用过一段时间后失去原有的鲜艳色彩.好的卡座沙发当污渍接触到面料表面时不会被吸附、渗透,只需用普通毛巾沾清水擦拭不留痕迹,非常环保.

2、 Fabric selection: now many card seat sofas mostly use low-cost fabrics, which seriously fade and shrink after washing, resulting in the loss of the original bright colors after use for a period of time A good card seat sofa will not be absorbed or penetrated when the stain touches the surface of the fabric. It only needs an ordinary towel to wipe with clean water without leaving any trace. It is very environmentally friendly

三、填充物的选择：卡座沙发与人体的契合度,取决于卡座沙发的填充物.填充物材质的不同就在很大程度上形成了不同卡座沙发的不同坐感.一些小厂商生产的沙发因其成本低廉,大多采用劣质海绵的下脚料作为填充物,极易塌陷,品质无保证.

3、 Choice of filler: the fit between card seat sofa and human body depends on the filler of card seat sofa The different filling materials form the different sitting feeling of different card seat sofas to a great extent Because of their low cost, the sofas produced by some small manufacturers mostly use the leftovers of inferior sponge as filler, which is easy to collapse and has no guarantee of quality

四、特殊卡座弹簧的选择：一般餐厅卡座沙发不采用弹簧，但有些特殊餐厅或场所（西餐厅、休闲会所等）需要再卡座沙发中添加弹簧。而弹簧需要双成弹簧，有些劣质卡座沙发只采用单层弹簧,使用一段时间后弹簧会失去刚购买时的弹力,塌陷变形,时而还会发出吱呀呀的响声.好的卡座沙发即使小孩子在上面乱跳,座垫也不易发生变形.

4、 Selection of special card seat spring: generally, the card seat sofa in the restaurant does not use spring, But there are some special restaurants or places (Western restaurants, leisure clubs, etc.) need to add springs to the card seat sofa. The springs need double springs. Some low-quality card seat sofas only use single-layer springs. After use for a period of time, the springs will lose the elasticity when they were just bought, collapse and deform, and sometimes make squeaking noises. Even if children jump on a good card seat sofa, the seat cushion is not easy to deform