The data available on the website of the International Monetary Fund confirms that China is Israel's biggest trading partner in Asia.
According to the Direction of Trade Statistics (DOTS) provided by the International Monetary Fund, China is Israel's biggest trading partner in Asia in both export and import. Moreover, it globally stands in the second and third place in imports and exports respectively with Israel.
The data provided by the World Bank show that the bilateral trade between Israel and China had reached $9.837334 billion in 2017 and not $13 billion.
(To access the information on the IMF website, under country, select Israel and select the year 2017)