... tea plastic packaging bag/food grade packaging bag excellent product with low price certificates:ISO9001:2008,QS9000,SGS high ... PET/LLDPE, PET/NY/LLDPE2.Performance:good moisture,oxgen &light barrier,perfect oxygen and steeam barrier3.bag style: three-side ... bag, herbal incense bag, spice bag,pharmaceutical bags like teeth whitening bag,etc.5.Please offer the materical,thickness, printings colors ...