automatic chemical analyzer
automatic chemical cleaning system
automatic chemical diluting and mixing equipment
automatic chemical monitoring and control device
chemical addition agent
Noble metal chemical addition
automatic and semi-automatic
automatic change and automatic recovery device
automatic cutting and creasing press with automatic feeder
automatic repeat request [= automatic request for repetition] {= ARQ}
catalytic chemical vapor chemical
chemical and chemical engineering
Chemical Fertilizer Plant of Jianfeng Chemical Industry Comples
chemical industry and chemical fiber pipeline
chemical name of new chemical substance