Industrial complex with office buildings, landscaped greenery, and factory structures in the background.

Qingdao Zhongshitiancheng Petrochemical Co., Ltd.

Blue industrial drum labeled "Tetrahydrofuran 200KG" with hazard symbols in a warehouse.

Tetrahydrothiophene

Ethanethiol

Defoamer

Ethanethiol drum, 160KG capacity, labeled by Qingdao Zhongshitiancheng Petrochemical Co., Ltd.Blue 25kg container labeled "Silicone Defoamer" from Qingdao Zhongshi Tiancheng Petrochemical Co., Ltd.

Featured Products

A supplier of gas odorants and related equipment; achieving global success through quality.

Workers in blue uniforms operate machinery on an automated production line in a modern factory.
Industrial gas pipeline system with colorful valves and large metal pipes under a clear blue sky.

Brand Story

Zhong Shi” signifies gathering the strength of many and combining the best of the industry; "Tian Cheng" symbolizes upholding the original aspiration of quality and achieving a natural state. Since its inception, the company has been committed to the mission of "empowering industry with chemicals and connecting the world with quality," deeply cultivating core areas such as fine chemicals, petroleum products, and industrial additives. Its main products include tetrahydrothiophene, ethanethiol, and defoamers, which are widely used in various industries such as gas, water treatment, and pesticide intermediates.

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Two blue industrial barrels with hazard labels on a white background.Beaker containing a foaming liquid with text detailing chemical properties and usage instructions.Organic silicone defoamer product label with instructions, composition, and a beaker illustration.Industrial flow meters in various designs and sizes for measuring liquid and gas flow rates.

About Us

  Qingdao Zhongshi Tiancheng Petrochemical Co., Ltd. is a professional chemical enterprise focusing on supporting services for the natural gas, liquefied petroleum gas, and wastewater treatment industries. Its main products include tetrahydrothiophene (THT), ethanethiol, and defoamers.

  Having cultivated the domestic market for many years, the company holds a leading market share in related products.

 Leveraging its strong product capabilities, it is steadily expanding into the international market, having established long-term and stable strategic partnerships with customers in Algeria, Bangladesh, Iran, Turkey, Tunisia, and other countries. The company is steadily developing into a one-stop international comprehensive service provider.

Gas-specific valves

 Includes gate valves, solenoid valves, flame arresters, natural gas filters, etc. Made with high-quality materials, explosion-proof and leak-proof, compliant with national standards, and suitable for various gas pipeline conditions.

Intelligent drive device

Covers multi-turn, electro-hydraulic, and pneumatic actuators, supporting local and remote control. Offers complete explosion-proof protection levels, compatible with various valves, and ensures stable automated operation.

High-purity chemical raw materials

Main products include tetrahydrothiophene, ethanethiol, and various defoamers. All products meet purity standards, have complete qualifications, and are readily available to meet the needs of large-volume purchases and long-term cooperation both domestically and internationally.

Precise metering instrument

Multiple gas flow meters and gas meters are available, offering high measurement accuracy, wide range, and built-in temperature and pressure compensation. Ideal for gas metering and trade settlement.

Scientist in a lab coat analyzing a sample with a handheld device in a laboratory setting.Worker in a blue uniform and yellow hard hat inspecting industrial machinery in a factory setting.

Gas-free worry, quality assurance

Precision craftsmanship ensures quality, and safety safeguards the entire gas supply chain.

Automated control for optimal  efficiency and ease of use

Deeply involved in the gas industry, focusing on safety-related solutions

Bright yellow industrial gas pipelines and red valves under a clear blue sky at a processing facility.Industrial refinery complex with storage tanks, pipelines, and distillation towers, surrounded by greenery.Engineer in a hard hat and safety vest inspects industrial equipment while holding a laptop.

Precision Slogans

Natural gas is colorless and odorless, posing a potential leakage hazard. Tetrahydrothiophene is a universally compliant odorant used by gas companies nationwide. The product is stable, does not degrade over long distances, has a highly recognizable warning odor, requires only a small injection volume, does not corrode pipeline equipment, and burns without leaving any residue or blockage. It is suitable for various gas transmission scenarios, building a strong safety warning and defense line for residential and industrial gas use.

Ethyl mercaptan, as a general-purpose gas odorant, has high olfactory sensitivity, can quickly identify trace leaks, has stable chemical properties, distributes odor evenly in the pipeline network, and is economical in overall cost. It is suitable for long-term stable addition to urban natural gas pipeline networks and liquefied gas stations, meets local gas safety regulations, and strengthens the bottom line of gas operation safety.

Serving factory automation systems and equipment maintenance sites, our intelligent actuators, metering instruments, and control valves provide precise flow control, data monitoring, and remote management for process pipelines, supporting enterprises in achieving efficient, safe, and intelligent operation and maintenance.

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