Question

翻译成英文：由于底印是手工操作的，个别工人操作中产生失误是难以避免的，所有我们不能保证整批货中不会出现劣质底印的产品。但

Answer 1

由于底印是手工操作的，个别工人操作中产生失误是难以避免的，所有我们不能保证整批货中不会出现劣质底印的产品。但这只是少数的。

Back stamps are by hand, and therefore inevitable are errors, which are few after all, in certain workmen's operation, and we think it impossible not to have any bad-quality products.