ān / zhuāng / zhī / jià / shí / qǐng / xiān / jiǎn / chá / fāng / tóu / luó / mào / shì / fǒu / pǐ / pèi安装支架时,请先检查方头螺帽是否匹配。When installing the bracket, first check whether the square-headed nut fits.