南非采购需求：硼硅酸盐防火玻璃、硼硅酸盐耐热玻璃、防火幕墙、防火门、防火窗、熔炉玻璃

I'm looking for 4mm borosilicate glass sheets suitable for wood burning heaters. Ideally, these sheets should be customizable and can be cut to specific sizes based on our requirements. It's crucial that the glass can withstand high temperatures and has good thermal resistance. Could you provide details on your product specifications, available sizes, and pricing? Additionally, I'd appreciate information on lead times for delivery and any minimum order quantities you may have. Looking forward to your prompt response!