随着市场经济的发展,传真机倍受青睐。以江苏镇江市为例,近几年,该市用户传真机发展年递增率高达75%以上,截止今年7月份到邮局办理的用户传真机累计总数已达335户,发展前景广阔。值得注意的是,私自安装使用传真机的“黑户”也日渐增多,据不完全统计,全市约有30余户“黑户”。由于“黑户”传真机的质量指标、安装调测后 With the development of market economy, fax machines are favored. In Zhenjiang, Jiangsu Province, for example, in recent years, the city’s user facsimile machine has an annual growth rate of over 75%. As of July this year, the total number of facsimile machines sent to the post office reached 335, indicating a promising development prospect. It is worth noting that the number of “black households” who install and use the fax machines by themselves is also increasing. According to incomplete statistics, there are about 30 “black households” in the city. Due to the quality standard of “Black House ” fax machine, after installation and commissioning