Likulu la QC la Xinglu mankhwala lili ndi HPLC yapamwamba, GC ndi zida zina zowunikira. Tadutsa chiphaso cha ISO9001, komanso takhazikitsa dongosolo lathunthu lowongolera kuti tiwonetsetse kuti kupanga ndi kothandiza, kosasunthika komanso kowongolera.
