How big was the Commercial Press and Chung Hua?

Just some notes while reading North-China Daily News without cross-checking Chinese newspapers.

North-China Daily News, 12th August 1926, p. 10.

'Some 810 employees of the printing works of the Chung Hua Book Co. at 277 Bubbling Well Road, who struck on Monday, are still out. … About 150 employees in the printing works of the American Presbyterian Mission Press Works at 135 North Szechuen Road are still on strike.' (emphasis mine)

North-China Daily News, 14th August 1926, p. 8. 

'The strike in the Chung Hua printing works at 277 Bubbling Well Road, where about 810 persons have been out for more than a week, still continues. Agitators are now attempting to extend the dissatisfaction to the sales department at the corner of Foochow and Honan Roads. No settlement has yet been arrived at in the strike of 150 printers in the American Presbyterian Mission Press works at 135 North Szechuen Road.' (emphasis mine)

North-China Daily News, 19th August 1926, p. 10.

'Although no settlement has been reached in the strike of 810 printers in the Chung Hua printing works at 277 Bubbling Well Road, the employees of the sales department at the corner of Foochow and Honan Roads are working practically normally, only four employees failing to show up for work yesterday. The police are still giving their protection to the office and have succeeded in breaking up the gang of pickets which has been harassing the employees for several days.' (emphasis mine)

North-China Daily News, 19th August 1926, p. 10.

'It is reported that the 150 employees of the American Presbyterian Mission printing works at 135 North Szechuen Road, who went on strike on August 6, have expressed a desire to return to work and that the management is contemplating re-opening the works shortly.' (emphasis mine)

North-China Daily News, 4th October 1926, p. 14.

'About 1,600 of the 2,000 employees in the printing department of the Commercial Press, who struck on Friday to try and enforce a demand for the dismissal of a foreman, when they claimed had made a false report to the management to the effect that they were idling their time in gambling, resumed work unconditionally on Saturday afternoon. Of the remaining 400 on strike 50 representatives were chosen and held a meeting at the Commercial Press Employees Union in Paoshan Road when it was decided that they should proceed with the strike until the foreman was dismissed.' (emphasis mine)

North-China Daily News, 5th October 1926, p. 8.

'The backbone of the strike in the printing department of the Commercial Press was broken, when the remaining 400 of 2,000 originally on strike returned to work yesterday morning, unconditionally. It is understood that the management will not deduct the strikers’ wages for the three days’ duration of the strike.' (emphasis mine)