More than ten years ago, Shi helped in the pig farm. He found that mosquitoes ran rampant in the pigsty in summer night, which seriously affected the weight gain of pigs at night and caused great losses to farmers. He decided to invent a useful mosquito killer.
After years of practice and research, he invented the mosquito killer "spectral mosquito killer", which has obtained the national invention patent.
At present, there are several models of his "spectral mosquito killer", including family version and farm version, and the price is around 150-200 yuan. The appearance and size of the mosquito killer are almost the same as lanterns. There is a lamp above and a big fan below.
Now, Shi can sell more than 65,438+100,000 mosquito killers every year, helping many farmers to alleviate the mosquito problem.