Increase the number of pieces that examine the product temperature from 3 pieces per 1 piece 10 times as a random product. with the inspection frequency is every 30 minutes to each of the production.
Increase the number of pieces of temperature monitoring. Random products three times per one random product 10 pieces one time with a frequency of every 30 minutes is the time of production.
Increase the number of pieces, check the temperature from random products 3 pieces per 1 times random products 10 pieces per 1 times. The frequency of each examination is all 30 minutes of production