比利时采购需求：推拉窗把手、窗锁、单点锁、推拉窗杆、单点窗把手、推拉窗月牙锁

I'm reaching out to gather more comprehensive information on the Sermic product range. Specifically, I'm interested in understanding the variety of products available, including their features and specifications. Could you provide detailed insights into these offerings? Additionally, I'd like to know about the pricing structure and current availability for these products. If there are any special offers, bulk purchase discounts, or lead times I should be aware of, please share that information as well. Looking forward to your prompt response!