0001640334-17-002085 8-K 3 20170926 4.01 9.01 20171002 20171002 12 Retech Corp 0001627611 7371 000000000 NV 1231 8-K 34 333-201319 171113639 CALLE DR. HERBIERTO NUNEZ #11A EDIFICIO APT. 104 N/A G8 00000 809-994-4443 CALLE DR. HERBIERTO NUNEZ #11A EDIFICIO APT. 104 N/A G8 00000 Devago, Inc. 20141210 8-K 1 retc_8k.htm FORM 8-K EX-16.1 2 retc_ex161.htm LETTER GRAPHIC 3 retc_ex161img1.jpg