... , ISO14001 environmental management system, GB/T28001 occupational health and safety management system certification in the same industry. Weifang ... instrument etc. for example micro-electronics production,PCB product and LCD etc. is uncoated paper.Substance:68,70gsm. 5 ... specification,books, Invitation cards, brochure, notebook, publicity, leaflets and so on. is uncoated paper. Substance:55-150gsm. 1> ...