QI has developed 22 models of dual-mass flywheels, covering Audi, VW, Peugeot, Ford, Cadillac, etc., with a total mold investment of over US$600,000. Each dual-mass flywheel has been verified by 100,000 kilometers of simulation durability tests. The products comply with OE standards and have reliable quality.

QI has developed 42 transfer cases, covering mainstream car series such as Mercedes, BMW, GM, Ford, and Jeep. The products are processed with precision professional equipment for gear hobbing and shaving, which can make them low-noise and have a long service life. Each model has undergone on-car test and 30,000-kilometer durability testing. Annual sales exceed 18,000 pieces.

In response to the problem of differential noise and oil leakage that often occurs in rear-wheel drive vehicles, four-wheel drive vehicles, and hard-core off-road vehicles, QI has developed conventional differentials and locking differentials for Cadillac series, BMW series, Jeep series, etc. based on market research results. Products such as transmissions and limited-slip differentials have been widely praised by the market.

The function of the DPF additive tank is to store and add catalyst to the fuel tank. Currently QI has developed 17 models of DPF additive tanks. The product is cost-effective and its performance meets OE standards. Each product is tested in Europe for more than 10,000 kilometers to ensure quality and durability.

QI has developed 22 models of dual-mass flywheels, covering Audi, VW, Peugeot, Ford, Cadillac, etc., with a total mold investment of over US$600,000. Each dual-mass flywheel has been verified by 100,000 kilometers of simulation durability tests. The products comply with OE standards and have reliable quality.

QI has developed 42 transfer cases, covering mainstream car series such as Mercedes, BMW, GM, Ford, and Jeep. The products are processed with precision professional equipment for gear hobbing and shaving, which can make them low-noise and have a long service life. Each model has undergone on-car test and 30,000-kilometer durability testing. Annual sales exceed 18,000 pieces.

In response to the problem of differential noise and oil leakage that often occurs in rear-wheel drive vehicles, four-wheel drive vehicles, and hard-core off-road vehicles, QI has developed conventional differentials and locking differentials for Cadillac series, BMW series, Jeep series, etc. based on market research results. Products such as transmissions and limited-slip differentials have been widely praised by the market.