yi'an activated carbon gauze mask disposable dust-proof anti-dust smoke lung industry 5-layer thickened formaldehyde laboratory packaging 以安活性炭口罩一次性防尘防粉尘烟肺工业5层加厚甲醛实验室包装

Small-scale operation, minimal profits, no shipping insurance. If the product is damaged after sale, you can take photos and contact customer service for after-sales assistance. Due to numerous styles, some items may be out of stock. If unavailable and unable to reach the customer, we will send the available items first; for out-of-stock items, a refund will be processed through customer service. This store does not support returns due to reasons such as "poor quality" or inability to sell. Note that the 7-day no-reason return policy only applies to individual self-use customers. Wholesale customers who receive samples are not eligible for the 7-day no-reason policy. Thank you for your understanding. The prices at this shop do not include invoicing. If invoicing or customization is needed, please contact the manager via WeChat.