Linhai Duqiao Fine Chemical Factory,acetoxyacetyl chloride,ethyl 4-bromocrotonate,2-acetoxyisobutyryl chloride,methyl 4-bromobenzoate, 2-acetoxyisobutyryl bromide,ethyl 2,2-diethoxyacetate,1-naphthaldehyde,2,2-diethoxyethanol