Sportswear Brand Production Partner Needed

I'm seeking a reliable sportswear factory to handle the full production of my long-sleeved sportswear line, using high-quality cotton.

Key Requirements:
- Full production service for long-sleeved sportswear
- Expertise in using and sourcing quality cotton
- Ability to handle custom designs according to my brand specifications

Ideal Skills and Experience:
- Proven track record in sportswear manufacturing
- Strong network of cotton suppliers
- Experience in working with apparel startups or brands

Please provide samples of previous work and a detailed proposal.