Cov cim ntawm cov pob zeb cuav
Mar 20, 2021
Cov cim ntawmdagzeb lauj
Ua ntej, lub ntuj marble xim yog tus ci, yuav muaj thaj tsam loj ntawm cov natural grain.Thiab dag cov kob xim daj yog ntau huab, thiab tsis muaj grain.
Ob, poob qis rau ob peb ncos ntawm dilute hydrochloric acid, ntuj marble khaus foaming, dag marble foaming tsis muaj zog txawm tias tsis ua npuas.
