sodium hydroxymethyl cellulose_sodium hydroxymethyl cellulose

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Taiwan’s labor working environment air pollution allowable concentration standard stipulates that the average allowable concentration of dichloroethyl ether (Dichloroethyl ether) in the workplace for eight hours per day (PEL-TWA) is 5 ppm, 29 mg/m3.

triethylenediamine

280 57 9 cas

n morpholine n oxide

alcohol iodine

povifine

iodine a metal

n Sử dụng methylmorpholine

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