HONG KONG–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating (FSR) of A+ (Superior) and the Long-Term Issuer Credit Rating (Long-Term ICR) of “aa-” of Sompo Japan Nipponkoa Insurance Inc. (SJNK) (Japan). A.M. Best also has affirmed the FSR of A- (Excellent) and the Long-Term ICR of “a-” of SJNK’s subsidiary, NIPPONKOA Insurance Company (China) Limited (NKC) (China). The outlook of these Credit Ratings (ratings) remains stable. Concurrently, A.M. Best has affirmed the FSR of