California-based jeweller - Chong Hing Jewelers has established its online presence, and launched a new website - ChongHing.com. The jeweller is so far present in California through six stores. The new portal will contain a product portfolio of fine jewellery, luxury watches, loose diamonds and gifts, similar to those available at the Chong Hing stores, which include high-end brands like Patek Philippe, Bulgari, Chopard, Roberto Coin and others.