These factories are of mixed quality. Some will use rather poor quality ingredients and casual p'ao-chih to boost profits.
藥廠良莠不齊，有的為了利潤，會用較低劣的藥材，炮製過程也較隨便，如熟地要反覆蒸九次，藥廠通常只把它蒸黑而已。此外藥材用低溫乾燥對藥性保存較好，他們為了省時自然用高溫。