After hearing nagging concerns about China at the Mid-America Truck Show, we spoke with the CEOs of three suppliers to Chinese truck OEMs about the NS IV diesel engine emissions standards, production trends and natural gas. All confirmed China is going forward in July with NS IV implementation in major cities, with the rest of the country following over 18 months as oil companies expand their limited low sulfur diesel capacity and nitrogen companies ramp up urea distribution. Only Beijing, Shanghai and Guangzhou are on track to have the diesel and urea availability by July, so initial implementation is likely to be limited to as much as 20% of production, according to one supplier. At a conference in March, regulators and OEMs laid out modest initial enforcement, which toughens next July. The general sense from these suppliers is there is embarrassment in China that they’ve had to delay the NS IV standards so many times already, and public pressure to curb pollution makes another delay unacceptable to the new government. While uncertainty was the consistent message on the production outlook and our contacts are generally concerned about Chinese OEMs ability to control inventory, truck production came back strong after Chinese New Year in Feb. The suppliers we spoke with generally don’t expect much NS IV pre-buying and believe the government could limit pre-buying to show seriousness about air quality, but our contacts also couldn’t rule it out. Another big China truck theme is natural gas engines, which are already being certified at NS V emissions, and production is running at 55K-60K units this year, ~6% of truck & bus production. This has been growing ~20% per year even as Chinese truck and bus production is down 30% in the past two years, and far ahead of the 4K-5K NA Class 8 natural gas build rate, or ~2%.