Inquiry about OEM Instant Tea Powder Manufacturing

I am seeking a reliable OEM manufacturer for custom instant tea sachets, including milk tea premix and black tea powder. The required flavors are: - Instant Milk Tea (Cardamom) – 3-in-1 - Instant Milk Tea (Spice) – cardamom, cinnamon, ginger - Instant Milk Tea (Strong) – cardamom, cinnamon, cloves - Instant Black Tea (Cardamom) – no milk - Instant Black Tea (Spice) – cardamom, cinnamon, ginger - Instant Mint Tea – no milk All products must be fully instant and dissolvable in hot water, fine powder with no residue, and have balanced flavor with strong tea taste. I need confirmation on support for custom formulation with these ingredients, ability to provide samples for all 6 flavors, MOQ per flavor, and price. I would like to receive samples first before placing a large order.