本次经济评估中经济效益的含义是年生产利润，从工厂开始建设时期到生产工艺

The economic benefit in this economic assessment means the annual production profit. From the period when the plant starts construction to the end of the production process and the product acetic anhydride is sold out, the time, personnel, and material costs the plant spends in producing acetic anhydride The relationship with the annual output value is simply the proportional relationship between the enterprise output value and the production cost.

The economic benefits in this economic assessment means that the annual production profit, from the beginning of the factory construction period to the end of the production process and sold out of the time of the product acetic anhydride, the factory in the production of acetic anhydride time, personnel, materials cost and annual output value relationship, simply is the ratio between the output value of the enterprise and production costs.

The meaning of economic benefit in this economic evaluation is annual production profit. From the time when the factory starts to build to the time when the production process ends and the product acetic anhydride is sold out, the relationship between the time, personnel, material cost and annual output value of the factory in the production of acetic anhydride is simply the proportion relationship between the enterprise output value and production cost.<br>