3H Inc window handles upvc supplier's door closer DC77V, it is to satisfy the house cusomers’need, so its appearance is easy and high-cast, it is small and light, so it is easy to installation and can be used after installation.
  In price, it is kind to people because of its public price. Around 100 yuan, it is easy to accept of many people.
  Even if the price is cheap, but its performance is very high.
  Thinking of many conditions of the house, so most of customers don’t have the prefessional knowledege of the door closer. So the biggest merit of the DC77V is high adaptation and the performance is stabilized. In our Chinese, it is “NaiCao”. It is standard for other door closer, such as weather resistance, DC77V can be used in 50° to -20°。
  The speed of locked, closed door can be changed in less time. The opending cover can be choosed and it is suitable for fireproofing and smoke control door.