Cost and profit of straw pulp pulping

3 tons of straw production 1 ton of pulp and 1 ton of fertilizer; 1 ton of pulp sold 1.500 yuan, 1 ton of chemical fertilizer sold to 200 yuan; 3 tons of straw can produce 1700 yuan. At the same time, biological pulping saves a lot of pollution control costs, and the production cost is far lower than the traditional chemical pulping process. Taking straw pulp as an example, the cost per ton of straw pulp produced by biological pulping method is only 1.500 yuan, which is 33% of the 4,500 yuan per ton produced by chemical pulping method.