... Industry: colophony, dope, industry leechdom, cosmetic, paint2. Grinding Materials And china Industry: alumina, quartz, slurry, kaoline, carborundum, sprayer dust. ... SUS316,etc.) Voltage & Frequency(Hz) is also needed for a precise quotation. Q:What is the real delivery time of your factory? ... days to 60 days based on different situations. Q: How do you ensure the quality of your products? A: Generally ...