Apple is saving companies that build tech-related electronics from negative growth, according to analysts.

Citibank said Apple is the linchpin for growth in Apple's supply chain, many of which are based in Asia.

The report, titled: Ex-Apple, the Tech Supply Chain is Still Not Growing Y/Y notes concerns that "Year over year, Apple on a dollars basis is expected to [be] outgrowing overall tech supply chain in the June quarter or, in other words, without Apple the supply chain is actually shrinking," according to Cnet.

Apple's supply chain includes Foxconn Technology which manufacturers Apple products in its factories in China, other parts of Asia, India, Latin America, Eastern Europe, the Middle East, and Africa. Other supliers had included Samsung, but Apple is reported to have switched its chip supplier to Elpida from Samsung. Apple and Samsung are currently locked in a dispute over patent infringement in dozens of countries around the world, with Apple claiming that Samsung's Galaxy Tab 10.1 infringes on several patents it owns.