OEM/ODM Factory for Motor Front Cover Wholesale to Surabaya
Company Core Philosophy
The company is specialized in casting mould technology design, tooling development, mould making,gravity casting aluminum alloy products, machining service as a whole, and has 36 seniorr&dengineers. 20 years experience in professional mould making.Strong technical team with certain research and development capabilities.Full machinery focus on quality and after-sales service.
Payment & Delivery
Payment Terms: 30% for deposit, 70% before shipment.
Package Details: usually use the standard 1200*800mm wood pallet, but can customized packaging according to the different products.
Delivery： 45 days after order confirmation.
There are 4 workshops in the company which including tooling workshop, casting workshop , machining workshop ,cleaning workshop and one full-equipped laboratory.
China Foundry Expo
Participate in China Foundry Expo every year.
Q:Plant Maturity – Years in service?
Q:Project Management is existed for new production?
Q:Ownership – Main Share Holders?
Q:Export License and/ or Experience?
Q:Products Development time?
Q:Products Cycle time ?
Always customer-oriented, and it's our ultimate target to be not only the most reliable, trustable and honest supplier, but also the partner for our customers for OEM/ODM Factory for Motor Front Cover Wholesale to Surabaya, We sincerely look forward to hearing from you. Give us a chance to show you our professionalism and passion.
The basic concept behind air conditioning is said to have been applied in ancient Egypt, where reeds were hung in windows and were moistened with trickling water. The evaporation of water cooled the air blowing from side to side the window. This process also made the air more humid, which can be beneficial in a dry desert climate. In Ancient Rome, water from aqueducts was circulated through the walls of certain houses to cool them. Other techniques in medieval Persia involved the use of cisterns and wind towers to cool buildings during the hot season.
Modern air conditioning emerged from advances in chemistry during the 19th century, and the first large-scale electrical air conditioning was invented and used in 1902 by American inventor Willis Carrier. The introduction of residential air conditioning in the 1920s helped enable the great migration to the Sun Belt in the United States.
The 2nd-century Chinese inventor Ding Huan (fl 180) of the Han Dynasty invented a rotary fan for air conditioning, with seven wheels 3 m (9.8 ft) in diameter and manually powered. In 747, Emperor Xuanzong (r. 712–762) of the Tang Dynasty (618–907) had the Cool Hall (Liang Tian) built in the imperial palace, which the Tang Yulin describes as having water-powered fan wheels for air training as well as rising jet streams of water from fountains. During the subsequent Song Dynasty (960–1279), written sources mentioned the air conditioning rotary fan as even more widely used.
In the 17th century, Cornelis Drebbel demonstrated “Turning Summer into Winter” for James I of England by adding salt to water.
In 1758, Benjamin Franklin and John Hadley, a chemistry professor at Cambridge University, conducted an experiment to explore the principle of evaporation as a means to rapidly cool an object. Franklin and Hadley long-established that evaporation of highly volatile liquids (such as alcohol and ether) could be used to drive down the temperature of an object past the freezing point of water. They conducted their experiment with the bulb of a mercury thermometer as their object and with a bellows used to speed-up the evaporation. They lowered the temperature of the thermometer bulb down to −14 °C (7 °F) while the ambient temperature was 18 °C (64 °F). Franklin noted that, soon after they passed the freezing point of water 0 °C (32 °F), a thin film of ice formed on the surface of the thermometer’s bulb and that the ice mass was about a quarter-inch thick when they stopped the trial upon reaching −14 °C (7 °F). Franklin concluded: “From this experiment one may see the possibility of freezing a man to death on a warm summer’s day”
In 1820, English scientist and inventor Michael Faraday discovered that compressing and liquefying ammonia could chill air when the liquefied ammonia was allowed to evaporate. In 1842, Florida physician John Gorrie second-hand compressor technology to create ice, which he used to cool air for his patients in his hospital in Apalachicola, Florida. He hoped to eventually use his ice-making machine to regulate the temperature of buildings. He even envisioned centralized air conditioning that could cool entire cities. Though his prototype leaked and performed irregularly, Gorrie was granted a patent in 1851 for his ice-making machine. His hopes for its success vanished soon afterwards when his chief financial backer died; Gorrie did not get the money he needed to develop the machine. According to his biographer, Vivian M. Sherlock, he blamed the “Ice King”, Frederic Tudor, for his failure, suspecting that Tudor had launched a smear campaign against his invention. Dr. Gorrie died impoverished in 1855, and the idea of air conditioning went away for 50 years.
Since prehistoric times, snow and ice were used for cooling. The business of harvesting ice during winter and storing for use in summer became popular towards the late 19th century. This practice was replaced by mechanical ice-making machines.
James Harrison’s first mechanical ice-making machine began operation in 1851 on the banks of the Barwon River at Rocky Point inside Geelong (Australia). His first commercial ice-making machine followed in 1854, and his patent for an ether vapor compression refrigeration system was granted in 1855. This novel system used a compressor to force the refrigeration gas to pass through a condenser, where it cooled down and liquefied. The liquefied gas then circulated through the refrigeration coils and vaporised again, cooling down the surrounding system.
With a haunting mystery at its core, DARK WATER is a thoroughly absorbing, suspense-filled thriller . Dahlia Williams (Connelly) and her five-year-old daughter are ready to begin a new life together. But their new apartment — dilapidated and worn — suddenly seems to take on a life of its own. Mysterious noises, persistent leaks of dark water and other strange happenings in the deserted apartment above send Dahlia on a haunting and mystifying pursuit — one that unleashes a torrent of living nightmares.