what are the following sentence exist problem ?

附件为更新后的环保物料清单，请帮忙告之IQC在来料检验时注意，检验合格后需要在其外包装上标识上“GP”，顺便，建议在每种环保物料的规格书加盖“GP”，这样可以避免有漏贴标识的，
Attached pls find the updated green material list , pls help me tell IQC to pay attention to the next incoming inspection , and to paste the “GP” label on the package if it is passed !
By the way , to advise stamping “GP” on the SPEC of each green material , so that avoid lose identification !