The former Chongqing Chain Block factory, with more than 40 years history of manual hoist production, is now Chongqing Kinglong Machinery Co.,LTD, located in Chongqing, China. The company occupies an area of 27,000 square meters, among which the workshop has 14,000 square meters, staying on the road side with a distance of 3km from Chongqing East Railway Station, 10km from jiulong port, and both land and water transportation is convenient.

With experiences on producing manual hoists for more than 40 years, we have possessed perfect testing devices and the advanced equipments, including seven computer-controlled lines for high strength chains imported from Germany and Italy, and other automatic and semiautomatic digital controlled machines. Our main items are various models of chain blocks, lever blocks, trolley and high strength chains as well as chain assembly. As one of the biggest professional manufacturers of china blocks in China, our present production for chain blocks has reached 200,000 sets and high strength chains 1,000,000 meters in a year.
Our own brands "SHAN CHENG" "Shuangyan" for chain block, lever block and trolley are very popular in domestic and overseas because of their high quality.
The principle of Chongqing Kinglong