求翻译：上次有从贵司采样Large Pen前筒与中筒超好的部分20Pcs，第一次功能测试都OK，烤干后第二次测试功能不理想，有4PCS功能为NG，明细附件，请知悉。是什么意思？

Last time there was large pen from your company before the sampling tube and the tube over a good part of 20pcs, the first functional tests are ok, dried after the second test function is not ideal, 4pcs function ng, details of accessories, please know.

The last is from your company before sampling Large Pen and super-good part and with the 20 Pcs, for the first time, functional tests are OK roasted dry after meeting the first 2 test function is not ideal, and there are 4 PCS NG function as an annex, which is known.

Previous time has from expensive department sampling Large Pen the tube with tube ultra good part 20Pcs, first function test all OK, after dries out the second test function not to be ideal, has the 4PCS function is NG, the detailed appendix, please learn about.

From your sample last Large parts of the cylinder and cylinder super well before Pen 20Pcs, functional tests are OK for the first time, after drying out function of the second test is unsatisfactory, 4PCS NG, detailed annexes, it knows.