南非采购需求：氮化硼，纳米级，吸油，柔滑肤感，彩妆系列，个人及家居护理

I'm in urgent need of a specific type of boron nitride for a project based in South Africa. Could you please provide me with detailed information on your lead times and minimum order quantities? Additionally, I would appreciate a breakdown of your pricing structure for bulk orders. It's also important for me to know if you offer samples for evaluation purposes before committing to a larger purchase. Any relevant technical specifications or certifications would also be helpful. Looking forward to your prompt response so we can move forward quickly. Thank you!