英语
Features:
1. Anti-ultraviolet, 365nm ultraviolet for 70 hours;
1. Anti-ultraviolet, 365nm ultraviolet for 70 hours;
2. Antistatic, 3rd to 9th power;
3. Self-lubricating ability, keep self-lubricating for three months;4. Anti-dust;
5. It will not turn white when boiled in water, and it will be kept clean in the water environment for a long time, and there will be no precipitates.
