Exhibit 10.3

E-compass Acquisition Corp.

6F/Tower, 2 West Prosper Centre

No.5, Guanghua Road

Chaoyang District

Beijing, 100020, P.R. China

Ladies and Gentlemen:

E-compass Acquisition Corp. (“Company”), a blank check company formed for the purpose of acquiring one or more businesses or entities (a “Business Combination”), intends to register its securities under the Securities Act of 1933, as amended (“Securities Act”), in connection with its initial public offering (“IPO”), pursuant to a registration statement on Form S-1 (“Registration Statement”).

The undersigned hereby commits that it will purchase an aggregate of 310,000 units of the Company (“Private Units”), each Private Unit consisting of one ordinary share of the Company, par value $0.0001 per share (“Ordinary Shares”), and one right (“Right”) each entitling the holder to receive one-tenth (1/10) of an Ordinary Share upon consummation of a Business Combination, at $10.00 per Private Unit, for an aggregate purchase price of $3,100,000 (the “Private Unit Purchase Price”).

Pursuant to the Underwriting Agreement entered into in connection with the IPO, in the event that investors introduced by the undersigned to Cantor Fitzgerald & Co. (“Cantor Fitzgerald”) do not purchase at least $20,000,000 of the units offering in the IPO, Cantor Fitzgerald shall be entitled to additional underwriting commission in the amount of $0.15 per unit (1.5%) on the amount below $20,000,000 invested by investors introduced by the undersigned. The undersigned hereby commits that it will purchase an additional amount of units of the Company (“Commission Units”) equal to such increased commission to be paid to Cantor Fitzgerald as a result of such event, up to a maximum of 110,000 Commission Units, or a maximum purchase price of $1,100,000 (“Private Commission Unit Purchase Price”, together with the Private Unit Purchase Price, the “Purchase Price”),

At least twenty-four (24) hours prior to the effective date of the Registration Statement, the undersigned will cause the Purchase Price to be delivered to Graubard Miller (“GM”), counsel for the Company, by wire transfer as set forth in the instructions attached as Exhibit A to hold in a non-interest bearing account until the Company consummates the IPO.

The consummation of the purchase and issuance of the Private Units and Commission Units shall occur simultaneously with the consummation of the IPO. Simultaneously with the consummation of the IPO, GM shall (i) deposit the Private Unit Purchase Price, without interest or deduction, into the trust fund (“Trust Fund”) established by the Company for the benefit of the Company’s public stockholders as described in the Registration Statement and (ii) to the extent increased commissions are due pursuant to the Underwriting Agreement and as directed in writing by the Company, deposit the Private Commission Unit Purchase Price, without interest or deduction, into the Trust Fund. Promptly following consummation of the IPO, GM shall return any unused portion of the Private Commission Unit Purchase Price to the undersigned, without interest. If the Company does not complete the IPO within six (6) months from the date of this letter (subject to a six (6) month extension at the Company’s option in its sole discretion), the Purchase Price (without interest or deduction) will be returned to the undersigned.

Each of the Company, Cantor Fitzgerald and the undersigned acknowledges and agrees that GM is serving hereunder solely as a convenience to the parties to facilitate the purchase of the Private Units and Commission Units and GM’s sole obligation under this letter agreement is to act with respect to holding and disbursing the Purchase Price for the Private Units and Commission Units as described above. GM shall not be liable to the Company, Cantor Fitzgerald or the undersigned or any other person or entity in respect of any act or failure to act hereunder or otherwise in connection with performing its services hereunder unless GM has acted in a manner constituting gross negligence or willful misconduct. The Company and the undersigned shall indemnify GM against any claim made against it (including reasonable attorney’s fees) by reason of it acting or failing to act in connection with this letter agreement except as a result of its gross negligence or willful misconduct. GM may rely and shall be protected in acting or refraining from acting upon any written notice, instruction or request furnished to it hereunder and believed by it to be genuine and to have been signed or presented by the proper party or parties.

The Private Units and Commission Units will be identical to the units to be sold by the Company in the IPO. Additionally, the undersigned agrees:

The undersigned acknowledges and agrees that the purchaser of the Private Units and Commission Units will execute agreements in form and substance typical for transactions of this nature necessary to effectuate the foregoing agreements and obligations prior to the consummation of the IPO as are reasonably acceptable to the undersigned, including but not limited to an insider letter.

The undersigned hereby represents and warrants that:

This letter agreement constitutes the entire agreement between the undersigned and the Company with respect to the purchase of the Private Units and Commission Units, and supersedes all prior and contemporaneous understandings, agreements, representations and warranties, both written and oral, with respect to the same.

Accepted and Agreed:

E-compass Acquisition Corp.

Graubard Miller

(solely with respect to its obligations to hold

and disburse the Purchase Price)

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