(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Customers visit the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland, March 23, 2019. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Photo taken on March 23, 2019 shows amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Photo taken on March 23, 2019 shows amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Photo taken on March 23, 2019 shows amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Photo taken on March 23, 2019 shows amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- A customer selects amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland, March 23, 2019. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Photo taken on March 23, 2019 shows amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Photo taken on March 23, 2019 shows amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN

(190324) -- WARSAW, March 24, 2019 (Xinhua) -- Photo taken on March 23, 2019 shows amber products during the 26th International Fair of Amber, Jewellery and Gemstones in Gdansk, northern Poland. The event, which was held from March 20 to 23, attracted more than 470 merchants from 54 countries and regions. (Xinhua/Chen Xu) POLAND-GDANSK-INT L AMBER FAIR PUBLICATIONxNOTxINxCHN