TechnologyTech giant faces stricter Chinese customs checks as it transfers equipmentApple is attempting to make more MacBooks in Vietnam to avoid the pain of U.S. tariffs on goods made in China.  © APTAIPEI -- Apple is ramping up production of key products in India and Vietnam to take advantage of a 90-day grace period on U.S. tariffs, but China's continued tightening of customs screenings is slowing such efforts, Nikkei Asia has learned.The American tech giant began asking key suppliers to ramp...