A: You can view the detailed parameters on the corresponding product detail page. If you need samples, please contact the customer service to explain your requirements. We will provide you with the sample application process and sample cost explanation (for bulk purchases, the sample cost can be negotiated to offset the payment). The quotation will be calculated based on the purchase quantity, product specifications, customization requirements, and transportation methods, etc. You can contact the customer service through online consultation or email to obtain the precise quotation sheet.