Mình dùng sand bags. Không cần đến thợ dịnh
(haha)
$15.99 - Super Heavy Duty ABCCANOPY Sandbag Saddlebag Design 4 Weight Bags for Photo Video Studio Stand,Backyard,Outdoor Patio,Sports (Black)
https://www.amazon.com/ABCCANOPY-Sandbag-Saddlebag-Design-Weight/dp/B01M264VSY/?tag=vcf4ever09-20