Inquiry about Sock Knitting Machine NEW

I am looking to purchase sock knitting machines and would like information on the available types, including terry sock knitting machines, plan sock knitting machines, and high-speed sock circular knitting machines. Please provide details on pricing, spare parts availability and their costs, which parts wear out quickly, maintenance difficulty, required training, production capacity (daily and monthly), electricity consumption, differences between lower and higher priced models, and recommendations for beginners. I also need to know about warranty, after-sales service, installation and setup support, and the required factory space.