1、UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON,DC 20549 FORM 20-F OR For the fiscal year ended December 31,2017 OR OR Date of event requiring this shell company report:Not applicable For the transition period from _ to _ Commission file number:001-34848 Securities registered or to be re
2、gistered pursuant to Section 12(b)of the Act:Securities registered or to be registered pursuant to Section 12(g)of the Act:None Securities for which there is a reporting obligation pursuant to Section 15(d)of the Act:None Indicate the number of outstanding shares of each of the issuers classes of ca
3、pital or common stock as of the close of the period covered by the annual report:As of December 31,2017,there were 36,979,346 shares of the registrants common stock,$0.0001 par value,outstanding.Indicate by check mark if the registrant is a well-known seasoned issuer,as defined in Rule 405 of the Se
4、curities Act._ Yes X No If this report is an annual or transition report,indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d)of the Securities Exchange Act of 1934._ Yes X No Indicate by check mark whether the registrant(1)has filed all reports req
5、uired to be filed by Section 13 or 15(d)of the Securities Exchange Act of 1934 during the preceding 12 months(or for such shorter period that the registrant was required to file such reports),and(2)has been subject to such filing requirements for the past 90 days.X Yes _ No Indicate by check mark wh
6、ether the registrant has submitted electronically and posted on its corporate Web site,if any,every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months(or for such shorter period that the registrant was required to submit an