D. Specifiion and Services : ความหมาย การสั่งผลิต ...
The fiberglass work is necessary for this type of work requires a knowledge of how to protect against dust or Fiberglass. 1. inhalation powder into fiber. Use a cloth or mask to filter the air while working. 2. Do not turn on the fan until diffusion. If necessary, open to the wind. 3. Always use gloves when working, avoid direct contact with ...