China's introduction of the world's strictest nutrient standards for infant formula are likely to see scores of brands give up on a market that is shrinking along with the country's falling birth rates, industry executives and analysts say. New rules imposed in February force infant formula makers to invest heavily to re-make, test, certify and re-register their products for China, before potentially conducting new marketing campaigns. This will further shake up an industry already at the forefront of China's demographic decline, with bigger domestic and international bra...