NEWARK, N.J. – Toys “R” Us Inc. on Friday said it was removing all vinyl baby bibs from its Toys “R” Us and Babies “R” Us stores as a precaution after two bibs made in China for one supplier showed lead levels that exceeded Toys “R” Us standards.

Toys “R” Us, which operates more than 1,500 stores, said the result came in testing this month of bibs supplied by Hamco Inc. and marketed under the Koala Baby, Especially for Baby and Disney Baby labels.

Tests of Hamco bibs in May were within standards, Toys “R” Us said.

Vinyl bibs made by other companies have been temporarily removed to avoid any confusion among customers and allow further testing, Wayne-based Toys “R” Us said.

A message seeking comment from Hamco, based in Gonzales, La., was not immediately returned.

Childhood exposure to lead can cause learning problems, reduced intelligence, hyperactivity and attention deficit disorder, studies have shown.

Toys “R” Us, the nation’s second-largest toy seller after Wal-Mart Stores Inc., said customers can return any vinyl bib purchased from a Toys “R” Us or Babies “R” Us store for a full refund. Information is available at 800-869-7787.

The bib removal is the latest in a series of recent problems involving imports from China. Products including tires, toys, toothpaste, seafood and pet food have been recalled.