清远围墙铁艺围栏厂家 公园外墙防爬护栏 组装型栏杆 Qingyuan fence iron art fence factory park outside wall anti-climbing fence assembly type railings 围栏墙采用热镀锌管加工而成，从内到外防止钢铁基材的生锈，并经过脱脂、清洗、表调、喷洗、干燥、喷粉、固化等工艺处理。进口塑粉中添加抗紫外线剂、抗氧化
