| application | Assess the size and size of surface dust |
| Standard Accessories | Dust comparison display panel and case, dust assessment reference diagram, illuminated magnifying glass with lens, tape and a set of test log sheets |
1. For product quality problems caused by non-human products of instruments and equipment, the manufacturer will provide free warranty services during the warranty period;
2. There is no warranty period for fragile and consumable parts, and if you find product quality problems after receiving the goods, please apply for return and exchange within 7 days, and you will not wait for the overdue ones;