Exhibit 99.1

Dear Sirs

LEGAL OPINION ON CERTAIN SINGAPORE LAW MATTERS

1. We are the advisers on Singapore law to Sin Lian Seng Construction (“ListCo”) in connection with the ListCo’s registration statement on Form F-1 filed with the Securities and Exchange Commission (“Commission”) under the United States Securities Act of 1933 (“Act”) (“Registration Statement”), relating to the proposed listing and initial public offering of 6,250,000 Ordinary Shares of the ListCo with a par value of US$0.000005 per share (“Proposed Listing”). Capitalised terms used herein shall, unless otherwise defined, have the same meanings as ascribed to them in the Registration Statement.

2. This legal opinion is limited to the laws of Singapore in force as at the date hereof as currently applied by the Singapore courts and given on the basis that they will be governed by and construed in accordance with Singapore law. We express no opinion as to the laws of any other jurisdictions or as to factual matters, save for paragraph 3(b). We have assumed that there is nothing in the laws of any other jurisdiction which affects the opinions in this legal opinion, and we have made no investigation of, and express no opinion in relation to, the laws of any other jurisdiction for the purposes of this legal opinion. In this opinion, a reference to “laws” or “law” is a reference to the common law, principles of equity and laws and regulations constituted or evidenced by documents available to the public generally.

3. For the purposes of this legal opinion, we have examined only the documents set out in Schedule 1 (“Documents”) and no other document. Based on the foregoing and in reliance thereon and subject further to all qualifications and assumptions set out in this legal opinion and to any matters not disclosed to us, and having regard to such considerations of the laws of Singapore in force as at the date of this legal opinion as we consider relevant, we are of the opinion that:

6. For the purposes of rendering this legal opinion, we have relied, and based our opinions, only on the Documents. We do not purport to be an expert on or to be generally familiar with or qualified to express legal opinions based on any laws other than the laws of Singapore. Consequently, this legal opinion is limited to Singapore law currently in force and is given on the basis that it will be governed exclusively by and construed in accordance with, and any liability which may arise in respect of it is to be governed by, Singapore law. This legal opinion is given on the further basis that we undertake no responsibility and are under no obligation to notify any addressee of this legal opinion of any change in the laws of Singapore after the date of this legal opinion which could render the opinions expressed herein no longer applicable.

7. We have made no independent investigations of the laws of any other jurisdiction as a basis of this legal opinion and do not express or imply any views thereon. This opinion is delivered solely for the purpose of and in relation to the Proposed Listing and the Registration Statement publicly filed with the U.S. Securities and Exchange Commission on the date of this opinion and may not be used and may not be relied upon for any other purpose without our prior written consent.

8. We hereby consent to the use of this opinion in, and the filing hereof as an exhibit to, the Registration Statement, and to the reference to our name in such Registration Statement. In giving such consent, we do not thereby admit that we come within the category of persons whose consent is required under Section 7 of the U.S. Securities Act of 1933, as amended, or the regulations promulgated thereunder. Except with our prior written consent or consented herein, this opinion is not to be transmitted or disclosed to or used or relied upon by any other person or used or relied upon by the ListCo for any other purpose and may not be filed with any governmental agency or authority or quoted in any public document, save that to the extent required by any law or regulation or court order or in connection with any judicial proceeding or in seeking to establish any defence in any legal or regulatory proceeding or investigation relating to the matters set out herein. Our liability under this legal opinion shall not exceed the amount of legal fees received by us from the ListCo in relation to the Proposed Listing.

9. This opinion is given on the basis that it will be governed by, and construed in accordance with, Singapore law.

Yours faithfully

Drew & Napier LLC

SCHEDULE 1

Documents reviewed by Drew & Napier LLC