1. the ministerial regulations, standardization, administration, management, and security. Occupational safety, health and environment in the work on hazardous chemicals, b.e. 2556, definition of hazardous chemicals that "means elemental compounds or mixtures according to the list specified in the notification of the Director General which has a status of solid, liquid, or gas, whether in the form of steam, dust or fibres, fum has met one or more of the following combination of.
การแปล กรุณารอสักครู่..
