介绍性文本1.引文和注释2.解释3.标签要求4.（1）在符合本法规下列规定的情况下，对于双面阀瓣，应符合.5.（1）中的要求，对于非a.7的阀瓣，应符合.6.（1）中的要求。根据本法规，如果有适当的符号，则应采用唯一的标题。8法规、适当的解释性说明和.9.如果根据这些法规，需要适当的符号。如果根据这些法规，需要显示.11.（1）如果根据这些法规，需要适当的符号，则需要唯一的符号说明

Introductory Text1.Citation and Commencement2.Interpretation3.Labelling requirements4.(1) Subject to the following provisions of these Regulations, the.5.(1) In relation to a double-sided disc, the requirement in.6.(1) In relation to a disc which is not a.7.Where under these Regulations the appropriate symbol, the unique title.8.Where under these Regulations the appropriate explanatory statement and the.9.Where under these Regulations the appropriate symbol is required to.10.Where under these Regulations there is a requirement to show.11.(1) Where under these Regulations the appropriate symbol, the unique.SignatureExplanatory Note