1、采用塑料框架。                                                                   

2、电镀H型椅架。                                             

3、金属件要求：受力管件壁厚＞1.2MM，铬层厚度≥0.3um；焊接无夹渣、无气孔、无焊瘤，焊缝自然美观。电镀层无明显色差及裂纹和脱落。色泽亮丽无雾光，无脱落、无锈蚀。                                                                   

4、支架：壁厚1.0~1.2mm钢管压弯而成，表层电镀或喷涂处理。