1. You should make sure what kind of diving material you want to choose, and then choose the right raw material according to your product. If you don't know how to choose, you can inform the manufacturer of the diving material you want to use, and the professional staff of the diving material manufacturer will recommend the suitable material to you. Or you can send your company's samples to the manufacturer of diving materials, and their staff will help you evaluate what kind of raw materials you choose. 2. It is necessary to tell the manufacturer of diving material that you need the thickness of diving material, which can be measured with micrometer (it is better to use the thickness gauge of technical specialty for accurate measurement). Because the diving material is a kind of soft raw material, the pressure can not be large during accurate measurement. It is better to move the micrometer at will. 3. You need to tell the manufacturer what kind of fabric you want to use with your diving material, such as Leica, nylon, mercerized cloth, etc. If you can't tell what kind of fabric it is, you can send a sample of the product to the manufacturer of diving material, and they will give you the answer you want. 4. You need to tell the manufacturer that you want to match the fabric color. If it's a regular color, you can tell the manufacturer's color number. If it's not a regular color, you can send the sample to the diving material manufacturer, and they will extract the color you want according to the sample. 5. It is necessary to tell the manufacturers of diving materials the real use of their products. If the products are exported to the sea, such as diving suits and deep diving rubber gloves, they must be fitted with solvent resistance. If only some conventional products (such as knee pads, mouse pads, computer bags, cup covers, etc.) are used, they only need to fit them in the same way. 6. For the size requirements of phreatic materials, there are 51 × 130, 51 × 83 and 42 × 130 specifications. In general, 51 × 130 typesetting design saves raw materials. For the raw materials of loading containers, 51 × 83 specifications should be selected, which is more suitable for loading. 7. Delivery period: generally, the delivery time is 4-7 days. If there is special dyeing, the delivery time is half a month. 8. Packing method: it is generally roll packed. After receiving the product, it is necessary to spread the product immediately. Due to the package, part of the inner core will cause wrinkles. 9. Thickness and length error: the thickness error is generally about plus or minus 10%. If the thickness is 3mm, the actual thickness is between 2.7-3.3mm. The minimum error is about 0.2mm. The maximum error is plus or minus 0.5mm. The length error is about plus or minus 5%, which is usually longer and wider.