Prepare media according to specification of the method, and check the quality of the prepared media. Fill in the relevant records timely.

Prepare media according to specification of the method, and check the quality of the prepared media. Fill in the relevant records timely.

Prepare media according to specification of the method, and check the quality of the prepared media. Fill in the relevant records timely.

Prepare media according to specification of the method, and check the quality of the prepared media. Fill in the relevant records timely.