For over 40 years now, TPC has been a pioneer in Thai PVC production. We have upgraded our production technology to the highest international standards and responsibility for the environment and the social, time and time again, while maintaining our status as the leader in Thailand's PVC industry. Our production base has expanded into other countries in ASEAN has production facilities in three countries, namely Thailand, the Socialist Republic of Vietnam, and Indonesia. The Company is committed, moreover, to producing high-quality PVC, and to developing new products from PVC. Such products will contribute to a higher standard of living in the ASEAN region.

The PVC industry is TPC’s main business. A certain amount of investment has been made in downstream businesses that use PVC as their raw material, such as the manufacture of PVC compound, PVC pipe and fittings, and other finished products made from PVC. The purpose of such investment is to add value to the Company’s PVC production, enhance the stability of PVC prices, and develop new PVC-based products for the market, thus increasing the demand for PVC itself.

TPC is a a leader in PVC business in ASEAN, our place great emphasis on innovation in its research and product development activities in order to meet the needs of clients for higher-quality goods and services . Of particular importance is the development of high value-added products and green product, as well as research that can improve both the products themselves and the production process. The Company aims thereby to be the industry leader in cost saving and business opportunities.
  • 1966

    TPC is registered as a limited company.

  • 1971

    The first PVC plant in Thailand, in Samut Prakarn, commences commercial production.

  • 1984

    TPC registered common shares as a registered company in the Stock Exchange of Thailand. TPC joins the state’sEastern Seaboard Industrial Project as a founding member and invests in a 5.40% share of National Petrochemical Co., Ltd., (NPC).

  • 1989

    TPC establishes Riken (Thailand) Co., Ltd. as a joint venture to produce special-grade PVC compound. TPC holds a 35% share.

  • 1990

    TPC’s second PVC plant, at Map Ta Phut Industrial Estate, begins commercial production. TPC establishes Siam Stabilizers and Chemicals Co., Ltd. as a joint venture to produce compound addtives that enhance the capacity of PVC to withstand high temperatures. TPC holds a 60% share.

  • 1992

    His Majesty the King and Her Royal Highness Princess Chakri Sirindhorn graciously presided over the official opening of the Group 1 Petrochemical Industry (of which TPC is one in four companies of the group) at Map Ta Put Industrial Estate.

  • 1993

    TPC establishes TPC Oxy Co., Ltd. as a joint venture in Thailand for producing and distributing PVC paste resin. TPC holds a 51% share. TPC establishes a branch office in Ho Chi Minh City, Socialist Republic of Vietnam.

  • 1994

    TPC acquires public company status. TPC establishes Viet-Thai Plastchem Co., Ltd. (VTPC) as a joint venture to manufacture and distribute PVC compound in Vietnam. TPC holds a 66.28% share.

  • 1995

    TPC establishes Mitsui Vina Plastic and Chemical Corp.,Ltd. (MVPC) as a joint venture to manufacture and distribute PVC resin in Vietnam. TPC holds a 24% share.

  • 1996

    TPC invests in Rayong Olefins Co., Ltd. to manufacture and distribute ethylene. TPC holds a 7% share.
    TPC establishes, with Cementhai Chemicals Co., Ltd., PT. Siam Maspion Polymers (SMP) as a joint venture to produce and distribute PVC resin in Indonesia. TPC holds a 20% share.

  • 1998

    TPC establishes Total Plant Service Co., Ltd. to provide engineering design, plant repair and maintenance, production process design, and environmental management services.

  • 1999

    TPC buys shares in Nawaplastic Industries (Saraburi) Co., Ltd., which manufactures and distributes PVC pipe and finished PVC products, to serve as a base for developing new finished PVC products and markets for the construction industry, and thereby increase the use of PVC resin in Thailand.
    The first PVC plant in the Socialist Republic of Vietnam, belonging to MVPC,begins commercial production.

  • 2000

    TPC increases its proportion of shares held in MPVC from 24% to 70%. Together with that, the name of the company changes to TPC Vina Plastic and Chemical Corp.,Ltd.(TPC Vina).

  • 2001

    Purchases all shares in TPC Oxy Co., Ltd., which becomes TPC Paste Resin Co., Ltd.. 2004 Siam Cement Public Co., Ltd. offers to purchase common shares of TPC from other shareholders, thus making SCG a major shareholder in TPC.

  • 2004

    A subsidiary establishes Chemtech Co.,Ltd. to manufacture and distribute XLPE compound in the Socialist Republic of Vietnam.

  • 2005

    TPC purchases, with Siam Cement Public Co., Ltd., all common shares of SMP, and changes its name to PT. TPC Indo Plastic and Chemicals (TPC Indo), indirectly increasing TPC’s share in the company from 20% to 40%.

  • 2006

    A subsidiary establishes Minh Thai HouseComponent Co., Ltd. together with a local investor to manufacture and distribute finished PVC products for construction purposes in the Socialist Republic of Vietnam. The subsidiary holds 60% of all shares.

  • 2008

    A subsidiary joins local Cambodian investors in establishing Nawacam Co., Ltd. to produce and distribute PVC pipe and fittings. Its share in the new venture is 40%. The Company buys more shares issued through a registered capital increase for Minh Thai House Component Co., Ltd., thus raising its share from 60% to 80%.
    Close down PVC production facilities at Samut Prakarn.

  • 2010

    TPC Vina Plastic and Chemical Corp., Ltd. (TPC Vina) in Vietnam started its commercial production. PVC plant, Line 2 production capacity is 90,000 tons per year as of July 2010.

  • 2012

    The Siam Cement Public Co., Ltd. who owns 100% of the shares in SCG Chemicals Co., Ltd. bought the shares from major shareholders on January 30, 2012. Therefore, SCC and its subsidiaries increase the proportion of share capitals from 45.64% to 75.76% and also submitted the form of tender offer to other shareholders on February 9, 2012.

  • 2013

    The operations, including sales, logistics and research and development, are entirely carried out by SCG, both locally and overseas. The main aim is to create a synergy in strategy planning and implementation and to increase capacity in knowledge sharing and use of resources and knowledge through better collaboration and communication.


    The headquarters were relocated from 183, Rajanakarn Building, 14th-15th Floors, South Sathorn, Yan Nawa, Sathorn, Bangkok, to SCG 100th Year Building, Siam Cement Public Company Limited at 1, Siam Cement Road, Bangsue, Bangkok.

  • 2015

    In 2015, the Company aimed to strengthen balance of its supply chains to achieve sustainable growth by expanding its production capacity of VCM, a crucial raw material for PVC production, to reduce outsource-dependence. The attempt was successfully completed in Q2 of year 2015, resulting in total VCM production capacity of 590,000 tons per annum, an 18% increase of the original VCM production capacity.

  • 2017

    Voluntary delisting of the Company’s securities from the Stock Exchange of Thailand