U. S. chipmaker Intel apologized in China on Thursday after its letter telling suppliers to source products or work hard in the Xinjiang region sparked a backlash, making it the latest Western company to stumble upon rights issues in the country. Intel recently published what it described as an annual letter to suppliers, dated December, in which it claimed it had been “required to ensure that its chain of origin does not use hard work or products of origin or from the Xinjiang region,” following restrictions imposed through “various governments. “ The United States has accused China of widespread human…