I need to purchase approximately 250 units of hollow drill bits for paper drilling applications. Currently seeking reliable suppliers who can meet this quantity requirement. My budget and delivery timeline are still flexible - please share your product specifications and manufacturing capabilities. Kindly confirm if you can provide samples for quality testing before bulk order.

Looking for HQ PDC bits for deep hole rock core drilling. Need 1 piece for initial testing with shipping to Jeddah port. Potential follow-up order of 50 units if quality meets requirements. Please provide best pricing for both testing sample and bulk order including shipping costs to Saudi Arabia.

We are seeking a reliable supplier of nail drill bits for the beauty industry. Specific requirements include:
1. Product types: Diamond/Ceramic/Stainless Steel bits (specific product list available)
2. Sample order required for quality evaluation prior to bulk purchase
3. MOQ and EXW RMB pricing details needed
4. Quality assurance process: Our China-based representative will conduct sample inspection
5. Return policy for rejected samples required
6. Long-term supply partnership potential