Silane; phosphine; organic arsenic compound, not for medical purposes; ethane; organosilane; ammonia for industrial purposes; gas purifying preparations, namely, toxic gas neutralizers; chemicals for industrial use; chemical preparations in the nature of filtering materials in gas purifying industries; industrial chemicals; chemical source materials for depositing thin films on semiconductor wafers in semiconductor manufacturing; etchant for use in semiconductor manufacturing; bromine; carbon...

Testing, analysis, and evaluation of the knowledge, skills and abilities of others in the field of architectural glass and metal to determine conformity with certification standards for the purpose of certification and re-certification

Architectural and glass and metal contractor services