Serbia importer company request: mattress topper

I would like to request information about your products as well as a commercial offer. Below, I am providing the necessary details.
Mattress Topper (Gel memory foam) - SkyBlue
Material - 35D gel memory foam (density of memory foam 35 kg/m³)
Thickness - 5cm
Image/example of product - https://i.postimg.cc/HsdPVxhh/Sky-Blue-nadu-ek-primer.png
Color: SkyBlue
Sizes
90x200cmx5cm
140x200cmx5cm
160x200cmx5cm
Mattress Topper (Gel memory foam) - Egg Crete
Material - 35D gel memory foam (density of memory foam 35 kg/m³)- Egg Crete
Thickness - 7.5cm
Image/example of product - https://i.postimg.cc/zDSxZNGS/10cm-Egg-Crete-Memory-Foam.png
Color: Blue
Sizes
90x200cmx7.5cm
140x200cmx7.5cm
160x200cmx7.5cm
Pillow protector
Material - Cotton
Waterproofness - Yes
Image/example of product - https://i.postimg.cc/HLc6f7rV/pillow-protectors.png
Color: Blue
Size 50x70cm
Purchase Price: For the specified products, we would kindly request the price per unit and size.
Production Lead Time: Please provide an estimated production lead time.
Warranty: Do the mentioned products come with a warranty? If so, what is the duration?
Payment: What currencies are accepted for payment, and what is the percentage of advance payment? Additionally, is there any benefit if the full amount is paid in advance?
Collaboration: We are interested in establishing a partnership with your company, focusing on timely delivery, order quality, and successful joint business operations.