Cal. Bus. & Prof. Code § 12023.5

Notwithstanding any other provision of this code or any other law, jute cordage, hard fiber cordage, and hard fiber twine (whether covered or uncovered) may be marked and sold on a gross weight basis. The provisions of the fore-going sentence shall not apply to sales in retail stores for consumer use of any such product which has been removed from the wrapper or container in which it was received by the retailer.