US manufacturers affected by Tianjin explosion

Explosive China catastrophe
Explosive China catastrophe

Some American companies with manufacturing operations in China have been impacted by Wednesday's explosion in the port city of Tianjin.

On Thursday, farm equipment maker John Deere temporarily suspended operations in the area until it can complete an assessment. The company reported that several employees who were home at the time of the blasts "have sustained serious injuries and some are in critical condition."

Deere's facilities in the Tianjin Economic Development Area (TEDA) also suffered damage. A small group of employees working at the time of the blast also received minor injuries from broken glass when the windows shattered.

"A preliminary assessment to Deere's TEDA facilities found damage to various buildings including blown out windows and doors and damage to ceilings. At least one broken pipe caused water damage at the engine works facility," the release noted.

Read MoreDeath toll in China's Tianjin explosion rises to 50: Reports

The company also said that some of its workers haven't been able to return to their homes located within the restricted area near the site.

Deere further warned its employees about potential air quality hazards in the area.

Several thousand imported cars stored at the site were burned or destroyed, state media reported. They included more than 2,700 Volkswagens, 1,500 Renaults and 4,000 Hyundai and Kia vehicles.

Japanese auto maker Toyota told CNBC that there was no impact to its Tianjin business, thus far. When the explosions occurred the company was on a holiday period, and no injuries or fatalities were reported.

However, Toyota said that at a nearby dealership operated by the company, two employees were injured by broken glass.

"We have heard that there have been several injuries to employees who live in the surrounding area (including in company accommodation), but we are still verifying the details. We can, however, confirm that no deaths have been reported," a Toyota spokeswoman said.

Wal-Mart, which operates a facility in Tianjin, told CNBC in an email, "At this time, we are not feeling an impact. We, of course, continue to watch the situation."

Oil transportation to the port city does not seem to be affected according to AIS data monitored by Genscape Vesseltracker. However, the report does note that this could change as cargo holders asses the port after the explosion.

NBC News contributed to this report.