- (NSString *)getFirstString:(ICCustom *)custom {

    NSMutableString *source = [custom.merchantAbbreviation mutableCopy];

    if(source && custom.merchantAbbreviation.length>0)

    {

        CFRange range = CFRangeMake(0, 1);

        CFStringTransform((__bridge CFMutableStringRef)source, &range, kCFStringTransformMandarinLatin, NO);

        CFStringTransform((__bridge CFMutableStringRef)source, &range, kCFStringTransformStripDiacritics, NO);

        NSString *phonetic = source;

        phonetic = [phonetic substringToIndex:1];

        phonetic = [phonetic uppercaseString];

        int temp = [phonetic characterAtIndex:0];

        if (temp < 65 || temp > 122 || (temp > 90 && temp < 97)) {

            //不合法的title

            phonetic = @"#";

        }else{

            phonetic = phonetic;

        }

        return phonetic;

    }else

    {

        return @"#";

    }

}