Inquiry about Numatic Henry and Kärcher NT Carbon Brush Sets

I am looking for a manufacturing partner to supply carbon brush sets for vacuum cleaners. Specifically, I need sets compatible with Numatic Henry, Hetty, and James models, and Kärcher NT series vacuums. For the Numatic Henry set: Dimensions are 7.9 mm × 5.9 mm × 30 mm, made of electrographite carbon. Assembly includes steel compression spring, copper braided lead wire, and spade terminal connector. OEM reference is 220248. For the Kärcher NT set: Dimensions are 6.3 mm × 11 mm × 30 mm, also electrographite carbon. Assembly includes copper braided lead wire and steel compression spring. I require a test order of 300 sets for the Numatic Henry and 250 sets for the Kärcher NT. Please provide unit prices for quantities of 300, 500, and 1000 sets. Also include sample cost and shipping, production lead time, certification documents (ISO 9001 and RoHS compliance), technical drawing or dimension confirmation, and photos of the product and packaging. I plan to start with air freight for the test order and increase volumes based on quality and performance.