南非采购需求：石笼、T型柱、Y型柱、刀片刺网、防鸟刺、植物支架

I'm looking to gather more details about the Y Posts, K Posts, and I Posts. Please provide me with information regarding their specifications, available quantities, and pricing options. It's important that I understand the materials used and any customization options you might offer as well. Additionally, I would appreciate it if you could share lead times for production and delivery, as well as any minimum order requirements. If there are any variations or alternatives you think might be suitable, feel free to include those as well. Looking forward to your prompt response—thanks!