美国采购需求：铝合金门、自动门、阳台门、卧室门、双开门、楼宇门

I'm looking to get some details on how we can proceed with the purchase of 11 new windows and prehung interior door packages for my home. Could you provide insight into the shipping costs involved, and what options are available for ensuring a reliable door-to-door delivery to Los Angeles? Additionally, it would be helpful to understand your shipping process and any guarantees you can offer to make sure everything arrives safely and on time. I'm keen to make this transaction as smooth as possible, so any information on estimated delivery times and tracking options would also be appreciated.