I. Production situation From January to October 2019, among the main products of the bicycle manufacturing industry in the country, the production of two-wheeled pedal bicycles was 32.811 million, a year-on-year decrease of 8.5%; the output of electric bicycles was 22.738 million, a year-on-year increase of 19.9%. In the month of October, the production of two-wheeled bicycles nationwide was 2.812 million, a year-on-year decrease of 15.3%; the output of electric bicycles was 2.319 million, a year-on-year increase of 17.7%. 2. Benefits From January to October 2019, the operating income of bicycle manufacturing enterprises above designated size was 39.54 billion yuan, a year-on-year decrease of 1.4%, and the total profit was 1.35 billion yuan, a year-on-year increase of 68.0%. The operating income of electric bicycles was 60.23 billion yuan, a year-on-year increase. 8.6%, with a total profit of 2.34 billion yuan, a year-on-year increase of 15.2%.

Small and medium-sized cranes use P-type rails for trolleys, while trolleys or trolleys use P-type rails

The full name of 3C certification is\"compulsory product certification system\". As of April 15, 2019, electric bicycle products that have not obtained CCC certification must not be manufactured, sold, imported, or used in other business activities. With the increasing attention to compulsory 3C certification, many companies will also declare their products to\"pass 3C certification\" in order to guide dealers and consumers to purchase their electric vehicles. But only if\"the whole vehicle + the components involved in driving safety\" have all passed the 3C certification, it can really be regarded as a 3C certification. However, electric vehicle batteries are not covered by the 3C certification. After the implementation of the new national standard, in accordance with the requirements of the new national standard for batteries, electric bicycle batteries only need to meet the following six conditions: ① the maximum output voltage of the battery of the electric bicycle should be less than or equal to 48V; 55kg (including battery); ③ The battery is fixed in the battery pack box to store electricity