Новостиmenu subcategory of Network

  • How the watch works

    The production and production of watches is based on a simple and witty invention, which is the "spring", which can tighten and store energy, and slowly release the energy to push the running device and pointer in the watch to display The function of time, such a spring device in the watch is called the main spring.
Page 1 / 1

Оставить свои сообщения

Отправить запрос сейчас
Отправить запрос сейчас