Chemical Corps affiliation with the corps. The Chemical Corps branch insignia consists of a cobalt blue, enamel benzene ring superimposed over two crossed gold retorts. The branch insignia, which was adopted in 1918 by the fledgling Chemical Service, measures .5 inches in height by 1.81 inches in width. Crossed shells with a dragon head was also commonly used in France for the Chemical service. The Chemical Warfare Service approved the insignia in 1921 and in 1924 the ring adopted the cobalt blue enamel. When the Chemical Warfare Service changed designations to the Chemical Corps in 1946 the symbol was retained. The regimental
Au pair ensure competence, fair dealing and high integrity. The Australian Au-Pair Families Association (AAPFA) is a not-for-profit organisation and members are Australian host families. AAPFA supports self-regulation in the Au pair industry and provides information and guidance to Au-Pair families based on international hosting standards and ethics. Au pair agencies in China sent young Chinese to the west to work as au pairs abroad, particularly for families who had adopted babies from China, to help them learn Chinese. In addition, China's rising middle class and economic growth have led to a growing demand for au pairs. This helps create opportunities to