也门采购需求：素食皮革、再生皮革、PU皮革、PVC皮革、闪光面料、绒面超细纤维、时尚原材料

I hope you can provide more comprehensive details regarding the quality standards of your products. Specifically, I'm interested in understanding the materials used in production, any certifications you hold, and your quality control processes. Additionally, could you share the available quantities for these items? Knowing the current stock levels and any potential lead times for larger orders would be very helpful. This info will assist us in making an informed decision moving forward. Thanks!