美国采购需求：物理治疗、缓解疼痛产品、产妇、产妇垫、皮肤护理、冰袋

I'm interested in purchasing gua sha face tools in bulk for my business. Could you please provide me with details regarding the different styles and materials you offer? Additionally, it would be great to know about the pricing, minimum order quantities, and any available customization options. Also, if you could share information about your production lead times and shipping processes, that would be helpful. I'm looking to establish a long-term partnership, so any insights into quality assurance and certifications you have in place would be appreciated. Thanks!