The bolt of the utility model can only be tightened and fixed before the enclosingcover is fastened and can not be dismantled with any tool; therefore the burglar resistant property is more reliable.
本实用新型的螺栓只能在封盖扣紧前上紧固定，用任何工具都不能拆卸，所以防盗性能更可靠。
2
For your reference, we are enclosing a few copies of leaflets, and will send you samples under separate cover.
兹随函附上几份说明书并另寄样品，供你方参考。
3
We are enclosing the illustrated catalogues and latest price list, under separate cover, we are sending you a full range of samples at once.