Quality of different types of model parts

The circumferential pitch deviation is calculated as a result of testing all 73 mesh pitches with a -5070 pitch gauge. And in this case, the measurement is made from the first toothed groove in the grinding direction. The pitch deviation and the inspection of each parameter list the circ

How to maintain the home cloth sofa

1. Keep a 0.51 cm gap between the wall of the sofa and the wall.
2. Avoid direct sunlight. Place it in a place away from sunlight, or use translucent tissue curtains to separate sunlight.
3. Vacuum at least once a week, paying particular attention to removing dust between fabric struc

Dongfeng 153 4x2 multifunction sprinkler

In June 2012, Hubei Chengli Special Purpose Vehicle Co., Ltd. launched two multi-function sprinklers, which combine the functions of sprinklers and aerial vehicles into a single vehicle and gained wide acceptance in the market.