SEDC Resources Sdn Bhd (formerly known as CMS Resources Sdn Bhd)
SEDC Quarries Sdn Bhd (formerly known as CMS Quarries Sdn Bhd)

SEDC Resources Sdn Bhd

CMS Resources Sdn Bhd is a 51:49 joint venture company between Cahya Mata Sarawak Berhad and Sarawak Economic Development Corporation (SEDC). CMS Resources in turn is the holding company for CMS Premix Sdn Bhd, CMS Premix (Miri) Sdn Bhd, CMS Quarries Sdn Bhd and CMS Penkuari Sdn Bhd.

The Company is the largest producer of crushed stone aggregates in Sarawak for microtonalite, limestone and granite. It supplies approximately 30% of all stone aggregates sold within the State.

SEDC Quarries Sdn Bhd

Combined, CMS Group’s quarry operations are the largest producers of crushed stone aggregates (granite, microtonalite and limestone) in Sarawak. Jointly, they account for about 35% of stone aggregates sold in Sarawak, which are suitable for road construction and buildings.

The following certification was achieved: ISO 14001:2004; ISO 9001:2008; ISO 18001:2007

    • Quarries Operation Process
    • Open Pit Quarry Operation
    • Blasting & Development
    • Production Loading & Haulage
    • Three Stages Crushing & Screening Plant Operation
    • Total of 8 Product Mix / Size
    • 6-9 Inch DCR, 3-4 Inch DCR, 2 Inch DCR, 1½ Inch DCR, 2 Inch SS, 1½ Inch SS, 3/4 Inch Graded & Quarry Sand
    • Sales Loading

Quarries Operation Stone Reserves

Name of Quarry Location Type of Operation Stone Aggregates Material Proven Reserves (MT) Annual Production (MT) Life Span (Years)
Stabar Quarry 7 Mile,
Kuching – Serian Road
Open Cast Operation Microtonalite 1.2 Milion 350,000 3.5
Sibanyis Quarry 15 Mile,
Kuching – Serian Road
Green Hill Quarry Operation Microtonalite 66.3 Million 900,000 73.5
Akud Quarry 21 Mile, Kuching – Serian Road Green Hill Quarry Operation Limestone 2.0 Million 360,000 5.5
Sebuyau Quarry Sebuyau Town Open Cast Operation Granite 1.8 Million 400,000 4.5
Penkuari 9½ Mile
Kuching – Serian Road
Open Cast Operation Microtonalite 1.6 Million 390,000 4.5
Total 72.9 Million 2,400,000

The microtonolite stone aggregates from Stabar Quarry is strategically located near Kuching. The limestone quarry at Bukit Akud supplies demand from Samarahan Division and the growing district of Siburan.

SEDC Quarries also operates a jetty at Pending, Kuching which caters for the loading of stones onto the barges, facilitating distribution and sale to locations across Sarawak.


SEDC Premix Sdn Bhd (formerly known as CMS Premix Sdn Bhd
SEDC Premix (Miri) Sdn Bhd (formerly known as CMS Premix (Miri) Sdn Bhd)

Premix operation have two operating companies SEDC Premix Sdn Bhd and SEDC Premix (Miri) Sdn Bhd.

SEDC Premix and SEDC Premix (Miri) are Sarawak’s leading premix producers supplying high quality asphalt for construction of highways, flyovers and airport runways. They own and operate a bitumen emulsion and cut back bitumen plant in Kuching.

They are Sarawak’s leading producer of asphaltic concrete (premix) and bituminous emulsion (emulsion).

The premix production facilities are located in Kuching (250 TPH), Sibu (250 TPH), Sarikei (100 TPH), Bintulu (100 TPH) and Miri (100 TPH). The mobile premix plants have a combined capacity of 140 TPH. They have emulsion production plants located in Kuching (10 TPH).

These production plants are supported by modern laboratories and experienced technicians capable of conducting a full range of mix designs and tests. All mix designs conform to JKR (Public Works Department) and Malaysian Standards.

SEDC Premix and SEDC Premix (Miri) have been the principal supplier of premix to JKR Sarawak since 1990. Apart from supplying premix for road construction and maintenance, these companies have also supplied premix for surfacing of runways of Kuching International Airport, Bintulu Airport, Miri Airport, Mulu Airport, Sibu Airport and Tanjong Manis Airport.

SEDC Premix achieved ISO 14001:2004; ISO 9001:2008; ISO 18001:2007 certification.

Premix Operation Plant Capacity

Location Plant Rated Production Capacity (Tonne per Hour) Years of Operation
Kuching Production Line 1: 250 TPH
Production Line 2: 150 TPH
17 years
1 year
Sibu Production Line 1: 250 TPH 11 years
Sarikei Production Line 1: 100 TPH
Production Line 2: 90 TPH
More than 20 years
2 years
Miri Production Line 1: 250 TPH 4 years
Bintulu Production Line 1: 250 TPH 3 years
Limbang Production Line 1: 50 TPH 19 years


SEDC Premix (Betong) Sdn Bhd (formerly known as Betong Premix Sdn Bhd)

SEDC Premix (Betong) Sdn Bhd is a 80% owned subsidiary company of SEDC Resources Sdn Bhd, a 51% owned subsidiary of Cahya Mata Sarawak Berhad. The remaining 49% equity of SEDC Resources is owned by Sarawak Economic Development Corporation.

The Company is principally involved in the business of supply of premix and road maintenance contractor works.

CMS Wires Sdn Bhd

CMS Wires Sdn Bhd established in 1985 produces wire mesh for the construction industry. The Company produces high quality steel bars and wire mesh manufactured to Malaysian Standard MS144:1987, MS145:1987 and MS146:1988, equivalent to British Standard BSS4482:1985 BS4449:1978 and BS4483:1985.

CMS Infra Trading Sdn Bhd


The Company trades in, either as an agent or as a distributor, a range of products in the following sectors – water management, construction, roads, building protection, composting and others.

CMS Infra Trading Sdn Bhd has been in business since 1990, catering to customers mainly across Sarawak. Over the years, the Company prides itself in having continuously increased the range of quality products and services, and having developed strong relationships with clients.