Inquiry about Premium Duvet Covers, Inserts, Pillowcases, and Sheets NEW

We are developing a premium bedding brand and seeking a long-term manufacturing partner for the following products: duvet inserts with natural filling (e.g., goose down), duvet covers made of 100% cotton percale, pillowcases, and fitted sheets.

Specific requirements include:
- Duvet covers: hidden U-shaped zipper closure on three sides (left, bottom, right), internal corner tie system at four corners, reinforced stitching, and premium finish.
- Pillowcases: hidden zipper closure that is soft and invisible from the outside, with comfortable finishing to avoid irritation during sleep.

We need information on:
- MOQ for each product (duvet covers, inserts, pillowcases, sheets)
- Fabric options for 100% cotton percale (233–300 thread count)
- Capability to produce hidden U-shaped zipper closures
- Availability of high-quality zippers (YKK or equivalent)
- Ability to produce reinforced corner ties (loops and strings)
- Price estimates for 300, 500, and 1000 units
- Sample cost and lead time
- Certifications (e.g., OEKO-TEX, RDS for down)
- Production lead time
- Private label packaging options.