Safety input is the basic condition that directly affects the safety production of enterprises. The company has never spared no expense in safety investment: in 2018, it invested 1.25 million yuan to transform the fire pipeline in the chemical fiber plant; In 2020, the liquid ammonia nitrogen plant will be changed to pipeline nitrogen, with an annual increase of more than 1.4 million yuan in cost; Now it is planning to add safety instrument system (SIS) to polyester plant, and the investment is expected to exceed one million yuan.