✔ 最佳答案
It is because twisted ropes made of this rope material are easier to get loosened, and otherwise machines produced in China by the Hong Kong suppliers are different from foreign ones. Therefore the quality that comes out is different from that of the original sample. The supplier has adjusted their machinery with every effort in order to achieve the same quality as the orginal sample.
Besides, as the original sample itself was not waxed, the present request for waxing needs to be processed by another factory. This will incur additional transportation cost and processing cost, therefore the price will be more expensive.