1. Online Directories and B2B Platforms: Utilize online directories such as IndiaMart, TradeIndia, or ExportersIndia. These platforms list manufacturers along with their contact details and product offerings. You can specify your search for T-shirt manufacturers in Ghaziabad.
2. Local Industrial Areas: Ghaziabad has several industrial areas like Sahibabad Industrial Area, Mohan Nagar Industrial Area, and Loni Industrial Area. Visit these areas and inquire about T-shirt manufacturers.
3. Trade Shows and Exhibitions: Attend trade shows and exhibitions related to the garment industry held in Ghaziabad or nearby regions. These events often feature T-shirt manufacturers showcasing their products.
4. Online Searches: Conduct specific online searches using terms like "T-shirt manufacturers in Ghaziabad" or "garment factories in Ghaziabad." This can lead you to individual manufacturers' websites or listings.
5. Local Networking and Referrals: Reach out to local contacts in the garment industry, such as retailers, wholesalers, or other manufacturers, for recommendations or referrals to T-shirt manufacturers in Ghaziabad.
6. Word of Mouth: Spread the word among your industry contacts or local connections in Uttar Pradesh. They might be aware of T-shirt manufacturers in Ghaziabad and can provide valuable referrals.

By using these methods, you should be able to find T-shirt manufacturers in Ghaziabad that meet your requirements. Be sure to conduct thorough research, ask for samples, and negotiate terms before finalizing any deals.